If n is a positive integer and the product of all integers from 1 to n, inclusive, is a multiple of 840, what is the least possible value of n?	Choose the correct choice:
A) 5
B) 6
C) 7
D) 8
E) 9
840 = 2*2*2*3*5*7, so n must be at least 7.   The answer is 7.
<result>C</result>
If n is a positive integer and the product of all integers from 1 to n, inclusive, is a multiple of 840, what is the least possible value of n?