Gina Is Upgrading Your Computer with a New Processor

Gina is upgrading your computer with a new processor. She installs the processor into your motherboard and adds the cooling system. She powers up the computer, and it begins to boot but then shuts down.
What could be the cause of this problem?

A) Computer is overclocked.
B) Thermal paste was not used.
C) Processor is not compatible.
D) Processor is not seated properly.