During the winter break, Sam decides to go for a skiing vacation in Aspen instead of taking piano lessons. The opportunity cost of the skiing vacation is the:

During the winter break, Sam decides to go for a skiing vacation in Aspen instead of taking piano lessons. The opportunity cost of the skiing vacation is the:

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During the winter break, Sam decides to go for a skiing vacation in Aspen instead of taking piano lessons. The opportunity cost of the skiing vacation is the:

?amount paid to the skiing instructor.

?value of piano lessons.

?cost of accommodation and food in Aspen. 

?cost of buying a piano.