Lisa Buys a 1982 BMW,which She Plans to Restore and Sell.She

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 $10,000 and that she can sell it for $15,000.After she has spent $10,000,she discovers she needs to replace the engine,which will cost $4000.She can sell the car without the new engine for $11,000.What should Lisa do

A) She should complete the repairs for $4000 and sell the car for $15,000.
B) She should sell the car now for $11,000.
C) She should keep the car because selling it would be a loss.
D) She should be totally indifferent between finishing the project and selling the car now.