After graduating from high school, Maria chose to go to college, while Omar chose to work full- time. Which of the following best describes the opportunity costs for these decisions?
a. Maria’s opportunity cost includes the salary she could have earned if she had gone to work.
b. Maria’s opportunity cost is her living expenses while attending college.
c. Omar’s opportunity cost is the salary he will earn from working.
d. Omar’s opportunity cost is the tuition and expenses he would have paid for college.
e. Omar’s opportunity cost is definitely greater than Maria’s.