You Want to Use a Metal Bar as a Resistor

Multiple Choice

You want to use a metal bar as a resistor.Its dimensions are 2 by 4 by 10 units.To get the smallest resistance from this bar,you should attach leads to the two opposite sides that have the dimensions of

A) 2 by 4 units.
B) 2 by 10 units.
C) 4 by 10 units.
D) any number of units because all connections give the same resistance.
E) None of these is correct.