While Traveling Abroad, Tammy Spent All of the Money in Her

While traveling abroad, Tammy spent all of the money in her purse to buy 5 plates of spaghetti and 6 oysters. Spaghetti costs 8 units of the local currency per plate and she had 82 units of currency in her purse. If s denotes the number of plates of spaghetti and o denotes the number of oysters purchased, the set of commodity bundles that she could just afford with the money in her purse is described by the equation

A) 8s + 6o = 82.
B) 6s + 8o = 82.
C) 8s + 7o = 82.
D) 5s + 6o = 82.
E) There is not enough information to determine the answer.