If 5^z is a factor of 160!, which of the following could be the value of z?	Choose the most appropriate option:
A) 40	B) 32	C) 51	D) 39	E) 60
5^z is a factor of 160!, what values can z take.   Powers of 5 in 160! = [160/5] + [160/25] +[160/125] , where [x] is the integral part of x   Powers of 5 in 160! = 32 + 6 + 1= 
<gadget id="calculator">32 + 6 + 1</gadget>
<output>39</output>
39   Hence the maximum value of 5^z in 160!= 5^39   Correct Option: 39
<result>D</result>
If 5^z is a factor of 160!, which of the following could be the value of z?