While Buying Refreshments for an Upcoming Party,you Notice That a Six-Pack

Multiple Choice

While buying refreshments for an upcoming party,you notice that a six-pack of Americana Beer costs $2 and a six-pack of Bavarian Beer costs $4.You buy the six-pack of Bavarian Beer,although you wonder if maybe two six-packs of Americana Beer would have been a better choice.The opportunity cost of the Bavarian Beer is:

A) $4.
B) a six-pack of Americana Beer.
C) two six-packs of Americana Beer.
D) $4 and the six-pack of Americana Beer.