how many zeros are there in 50!  Select the correct option:
A) 10
B) 11
C) 12
D) 13
E) 14

Rationale: "to find the number of trailing zeroes in 50 ! factorial we must find the number of integral values in : 50 / 5 + 50 / 5 ^ 2 + 50 / 5 ^ 3 + . . . . . . . . . = 10 + 2 + 0 + 0 . . . . = 12 answer : c"
Answer: C