Rod A and rod B are cylindrical rods made of the same metal. amd they differ only in size. Rod B has double the length and double the width of rod a. In an experiment, rod A is found to comduct heat at a rate of 25 W between a hot reservoir and a cold reservoir. At what width of rod A. rate will rod B conduct heat between the same two reservoirs?
A.12.5 W
B.100 W
C. 25 W
D.50 W
E. 200 W