A direct current of 2 A and an alternating current having a maximum value of 2 A flow through two identical resistances. The ratio of heat produced in the two resistances in the same time interval will be:
(A) 1 : 1
(B) 1 : 2
(C) 2 : 1
(D) 4 : 1
Correct Answer is: (C) 2 : 1
