Lisa Buys a 1982 BMW, Which She Plans to Restore

Lisa buys a 1982 BMW, which she plans to restore and sell. She anticipates that the cost of the car and the repairs will be $14,000 and that she can sell it for $15,000. When she has spent $10,000, she discovers she needs to replace the engine, which will cost $4,000. She can sell the car without the new engine for $11,000. What should Lisa do?

A) complete the repairs and sell the car for $15,000
B) cut her losses and sell the car now for $11,000
C) never try such an expensive project again
D) be totally indifferent between finishing the project and selling the car now