If Dell Buys a Computer from a Foreign Producer for $500

Multiple Choice

If Dell buys a computer from a foreign producer for $500 and sells it to Best Buy for $800,who then sells it to a consumer for $1,200,what is Dell's value added,Best Buy's value added,and the computer's contribution to GDP?

A) $300, $400, and $1,200
B) $300, $700, and $1,000
C) $300, $400, and $700
D) $800, $1,200, and $400