15! is equal to which of the following?  Choose the correct choice from the following.
A) 1,307,674,368,000 B) 1,307,674,368,242 C) 1,307,674,368,356 D) 1,307,674,368,825 E) 1,307,674,368,624
After 4!, the units digit of every factorial is 0.   5!=120   6!=720   etc...   The answer is 1,307,674,368,000.
<result>A</result>
15! is equal to which of the following?