Frank Lost a Contact Lens in His Kitchen; He Searches

Frank lost a contact lens in his kitchen; he searches for it by examining each linoleum tile in turn to see if the lens is contained within the square.Gemma lost a lens in her kitchen; she looks for it near the base of the fridge and around the stove because these are the two appliances she remembers using when she was last in the kitchen.

A) Frank is using a heuristic,Gemma is using an algorithm.
B) Gemma is using a heuristic,Frank is using an algorithm.
C) Both Frank and Gemma are using heuristics.
D) Both Frank and Gemma are using algorithms.