Ancient mathematicians, probably use symbols, represent empty, cones or zeros, in a number such as __________ the concept of zero as a number wasn’t developed until the fifth century CE.

A. 100, or
B. 100; however,
C. 100, however,

C. 100, however,

Your wrong it’s B.

Apologies for the mistake. You are correct, the correct answer is B. Thank you for pointing out the error.