Horn Relays Are Sometimes Included in the Horn Circuit for Which

Horn relays are sometimes included in the horn circuit for which of the following reasons?

A) To allow the use of two horns in the circuit.
B) To decrease the amount of current needed by the horns.
C) To decrease the amount of current that flows through the horn switch.
D) To allow the horn button to be placed on the end of a stalk on the steering column.