You Are Given a Copper Bar of Dimensions 3 Cm $3 \mathrm {~cm} \times 5 \mathrm {~cm}$

Multiple Choice

You are given a copper bar of dimensions 3 cm × 5 cm × 8 cm and asked to attach leads to it in order to make a resistor. If you want to achieve the smallest possible resistance, you should attach
The leads to the opposite faces that measure

A) $3 \mathrm {~cm} \times 5 \mathrm {~cm}$ .
B) $5 \mathrm {~cm} \times 8 \mathrm {~cm}$ .
C) $3 \mathrm {~cm} \times 8 \mathrm {~cm}$ .
D) Any pair of faces produces the same resistance.