A Chinese Restaurant Buys 10 Cups of Rice for $1;

A Chinese restaurant buys 10 cups of rice for $1; soy, fish and oyster sauces for $1 each; and assorted vegetables for $20. They create 10 meals with these ingredients and sell each one for $5. How much does this process contribute to GDP?

A) $23
B) $50
C) $73
D) $27