If k^3 is divisible by 168, what is the least possible value of integer k? Pick:
A) 36
B) 42
C) 48
D) 54
E) 60
k^3 = 168*x = 2^3*3*7*x   The factors of k must at minimum include 2*3*7= 
<gadget id="calculator">2*3*7</gadget>
<output>42</output>
42.   The answer is 42.
<result>B</result>
If k^3 is divisible by 168, what is the least possible value of integer k?