Which of the following are examples of coordinate headings?

A. 3, b, iii
B. A, i, a
C. ii, 2, B
D. A, B, C

My answer was C but i got it wrong,
im torn between A and B?
PLEASE HELP CANT FIND IT IN MY TEXT BOOK

http://papyr.com/hypertextbooks/comp1/outline.htm

I think this is what is meant by "coordinate headings."

A b c

The correct answer is D.... A B C. I just found it in my book

To determine which of the options are examples of coordinate headings, let's first understand what coordinate headings are.

Coordinate headings refer to a system of using coordinates or combinations of letters and numbers to identify specific points or items. In this case, we are looking for examples of coordinate headings using a combination of letters and numbers.

Let's analyze the options:

A. 3, b, iii - Option A includes a combination of numbers (3), lowercase letters (b), and Roman numerals (iii). While this is a combination of characters, it is not a commonly used form of coordinate heading. Roman numerals are not typically used in coordinate headings.

B. A, i, a - Option B includes uppercase letters (A), lowercase letters (i), and lowercase letters (a). This combination of characters is commonly used as a coordinate heading, especially in alphabetical or alphanumeric ordering systems. For example, it could represent row A, column i, and section a.

C. ii, 2, B - Option C consists of Roman numerals (ii), a number (2), and an uppercase letter (B). While Roman numerals are sometimes used in certain contexts, they are not typically included in coordinate headings. Therefore, option C is not a commonly used coordinate heading.

D. A, B, C - Option D includes only uppercase letters (A, B, C). This is a common form of coordinate heading, especially for alphabetical ordering systems. For example, it could represent different categories or sections labeled as A, B, and C.

Based on the above analysis, option B (A, i, a) is the most likely example of a coordinate heading. It follows a commonly used pattern of combining uppercase letters and lowercase letters, which is often seen in coordinate headings.

Therefore, the correct answer is B.