Dinosaurs have been extinct for about 6.5 times 10^7 years, while Neanderthals have been extinct for about 3.0 times 10^4 years. About how many times longer have dinosaurs been extinct than Neanderthals?

A.
1,000 times longer

B.
2,000 times longer

C.
10,000 times longer

D.
20,000 times longer