Tom and Jerry Have Two Tasks to Do All Day

Multiple Choice

Tom and Jerry have two tasks to do all day: make dishes and build fences.If Tom spends all day making dishes,he will have make 16 dishes.If he instead devotes his day to building fences,Tom will build 4 fences.If Jerry spends his day making dishes,he will make 14 dishes; if he spends the day building fences,he will build 7 fences.For Tom,the opportunity cost of building a fence is __________ dishes made.

A) 16
B) 12
C) 8
D) 4