What voltages should the two hot wires on a Molex connector read?

What voltages should the two hot wires on a Molex connector read?

• Red = 5 V; Yellow = 3.3 V
• Red = 5 V; Yellow = 12 V
• Red - 12 V; Yellow = 5 V
• Red = 3.3 V; Yellow = 5 V 

 

EXPLANATION

A Molex connector's red wire should be at 5 volts. The yellow wire should be at 12 volts.