Which information is necessary to solve this story problem?

There are 16 people at a barbeque fundraiser. The barbeque lasts for 5 hours. Mark buys 2 hot dogs for each person. Each hot dog cost $3. How much does Mark spend altogether?

A.
2 hot dogs per person, 16 people, $3 per hot dog

B.
5 hours, 16 people, 2 hot dogs per person

C.
2 hot dogs per person, 16 people

D.
2 hot dogs per person, $3 per hot dog