Dan Owns an Autographed Copy of a Lady Gaga CD

Dan owns an autographed copy of a Lady Gaga CD.If he sells it locally,he can get $100.If he puts it on eBay,he can get $500,of which he will pay $50 to eBay.eBay has therefore caused total economic surplus to be

A) unchanged.
B) $500 higher.
C) $50 higher.
D) $350 higher.
E) $400 higher.