please add the explanation

10. The government has been trying to decide whether or not to purchase any of the new, advanced missiles it has developed. One of the arguments in favor of purchasing the missiles is that since so much money has been spent on their development it would be a waste of money not to buy them now. What is the major problem with this argument?

A) It includes erosion costs in the decision-making process.

B) It includes sunk costs in the decision-making process.

C) It includes opportunity costs in the decision-making process.

D) It includes net working capital changes in the decision-making process.

E) It includes financing costs in the decision-making process.