If x and y are positive integers, and x^3*y^4 = 3456, which of the following is the value of xy?  Choices:
A) 6
B) 10
C) 12
D) 14
E) 16
3456 = 2^7*3^3 = 2^4*6^3   xy = 2*6= 
<gadget id="calculator">2*6</gadget>
<output>12</output>
12   The answer is 12.
<result>C</result>
If x and y are positive integers, and x^3*y^4 = 3456, which of the following is the value of xy?