A.   An electric generator creates a time-dependent induced voltage. An electric generator converts mechanical energy into electrical energy.

B.   An electric generator is used to increase or decrease an alternating current voltage. An electric generator converts electrical energy into magnetic energy.

C.   An electric generator creates a time-independent induced voltage. An electric generator converts electrical energy into magnetic energy.

D.   An electric generator is used to increase or decrease an alternating current voltage. An electric generator creates a time-independent induced voltage.