Assertion: An AC can be transmitted over long distances without much power loss.
Reason: An AC can be stepped up or down with the help of a transformer.

Options

A. Both (A) and (R) are true and (R) is the correct explanation of (A).
B. Both (A) and (R) are true but (R) is not the correct explanation of (A)
C. is true but (R) is false.
D. (A) is false and (R) is also false