Please answer problem 13 and provide a thorough explanation of your answer/show your work.

NOTE: There is an option, the reason for this is that option is known to be incorrect

13. You want to use a metal bar as a resistor. Its dimensions are 2 by 4 by 10 units. To get the largest resistance from this bar, you should attach leads to the two opposite sides that have the dimensions of any number of units because all connections give the same resistance. 2 by 4 units. 2 by 10 units. None of these is correct. wpow