X/13 < 4/5

A. X < 4/65

B. X < 13 4/5

C. X < 10 2/5

To solve this inequality, we can cross multiply:

5 * X < 13 * 4

5X < 52

Divide both sides of the inequality by 5 to isolate X:

X < 52/5

Simplify the fraction:

X < 10 2/5

Therefore, the correct option is C. X < 10 2/5.