Scenario 18-2 Jerry Has Two Jobs, One for the Winter and One

Scenario 18-2
Jerry has two jobs, one for the winter and one for the summer. In the winter, he workers as a lift attendant at a ski resort where he earns $10 per hour. During the summer, Jerry drives a tour bus around the ski resort, earning $12 per hour.
-Refer to Scenario 18-2.During the winter months,what is Jerry's opportunity cost of taking an hour off work to go skiing?

A) $12
B) between $10 and $12
C) $10
D) less than $10