David takes 10 minutes to process a customer, and 20 minutes to stock the shelves. Danny
takes 15 minutes to process a customer, and 15 minutes to stock the shelves. Which of the
following statements is true?
a. David has an absolute advantage in performing both tasks.
b. Danny has an absolute advantage in performing both tasks.
c. David has a comparative advantage in processing customers but not in stocking shelves.
d. Danny has a comparative advantage in processing customers but not in stocking shelves.
e. Danny has a comparative advantage in processing customers and in stocking shelves.