Assume That the Local Electronics Store Is Charging $200 for 2

Assume that the local electronics store is charging $200 for 2 GHz AMD Athlon microprocessors,while on the Internet,they can be purchased for $180.Part of this price difference is due to

A) the information one can get at the local store.
B) the higher-quality CPU at the local store.
C) the lower wholesale price at the local store.
D) random chance.
E) the lower input costs of the local store.