If 3x+y=40, 2x-y=20, for integers of x and y, 3y^2=?  Choose the correct choice from the following choices:
A) 2	B) 48	C) 0	D) 10	E) 3
3x+y = 40   2x-y = 20   5x = 60   x = 12   y = 4   3y^2 = 3*16= 
<gadget id="calculator">3*16</gadget>
<output>48</output>
48   Answer is 48
<result>B</result>
If 3x+y=40, 2x-y=20, for integers of x and y, 3y^2=?