If x is the smallest positive integer such that 4,536 multiplied by x is the square of an integer, then x must be Pick:
A) 12
B) 21
C) 16
D) 17
E) 14
4536= 6*6*3*3* 7*3= 
<gadget id="calculator"> 7*3</gadget>
<output>21</output>
21   Ans: 21
<result>B</result>
If x is the smallest positive integer such that 4,536 multiplied by x is the square of an integer, then x must be