Take-it-apart Tina had some experience in troubleshooting her PC. One day she decided to take the next big step by completely disassembling her computer. When she reassembled it and turned the computer on, she heard nothing, smelled nothing, and saw nothing. Poor, Tina! She did something wrong! Look at the following choices and select the one that would have most likely caused the problem

A) Pin 1 on the hard disk cable was plugged in to the motherboard in the wrong direction.
B) Tina forgot to connect the power supply to the motherboard.
C) Tina plugged the mouse into the keyboard connector.
D) Tina put an adapter in the wrong expansion slot.
E) Tina forgot to plug the power cord into the computer.

E