Hadi Wants to Buy a Car,but He Knows Nothing About

Hadi wants to buy a car,but he knows nothing about them.He asks his friend,Devon,to act as his agent and buy him a car because Devon works as a mechanic.Devon contacts Nadia,who is selling two cars.One car is in perfect condition and the other needs a new part in the engine.Devon buys both and keeps the car in perfect condition,giving Hadi the one that needs work.Which of the following is true regarding the situation?

A) Devon has breached his duty of care because he failed to recognize the problem with the car.
B) Devon has breached his duty of care because he was not qualified to assess the quality of a vehicle.
C) Devon has breached his fiduciary duty because his personal interests conflicted with Hadi's.
D) Devon was within his right because the option to buy the car could be considered payment for services.
E) Devon acted within the scope of the agency relationship because he got Hadi a car so he fulfilled his duty under the agency relationship.