Two Metal Rods Are to Be Used to Conduct Heat $100 ^ { \circ } \mathrm { C }$

Two metal rods are to be used to conduct heat from a region at $100 ^ { \circ } \mathrm { C }$ to a region at $0 ^ { \circ } \mathrm { C }$ as shown in the figure. The rods can be placed in parallel, as shown on the left, or in series, as on the right. When steady state flow is established, the heat conducted in the series arrangement is

A) the same as the heat conducted with the rods in parallel.
B) Iess than the heat conducted with the rods in parallel.
C) greater than the heat conducted with the rods in parallel.