A scuba diver descended 10 5/12 feet below sea level. Then, he descended another 3 1/5 feet. Which of the following is true about the scuba diver after both descents?

A. -13 37/60

B. 13 37/60

C. -7 13/60

D. 7 13/60

To find the total depth the scuba diver descended, we need to add the two descents together.

10 5/12 + 3 1/5 = 126/12 + 37/12 = 163/12 = 13 7/12 feet

Therefore, the correct answer is:

B. 13 7/12.