One benefit of using money to facilitate economic activity is that it does not require a double coincidence of wants.
Which of the examples describes a double coincidence of wants?
a. A baker, who is interested in acquiring meat, meets a butcher interested in acquiring bread.
b. A baker, who is interested in acquiring vegetables, meets a butcher who is also interested in acquiring vegetables.
c. Two people, who do not know one another, both order an extra-value meal #1 from McDonald's at the exact same moment.
d. Two couples both try to purchase the same house.
