The greatest common factor of positive integers m and n is 14. What is the greatest common factor of (2m^2, 2n^2)? Choose the most appropriate option:	A) 14	B) 28	C) 196	D) 392	E) 784
m = 14j and n = 14k, where the greatest common factor of j and k is 1.   2m^2 = 2*14*14*j^2 and 2n^2 =  2*14*14= 
<gadget id="calculator"> 2*14*14</gadget>
<output>392</output>
392   The answer is 392.
<result>D</result>
The greatest common factor of positive integers m and n is 14. What is the greatest common factor of (2m^2, 2n^2)?