Fact 1: Adult sponges produce eggs and sperm. Fact 2: Adults are sexually mature. Given the two facts above, mature sponges produce what?

Available choices:
[A]. eggs and sperm
[B]. live young
[C]. just sperm
[D]. Organic compounds
[E]. Chemical energy
[F]. just eggs
[G]. heat energy
[H]. gastropod shells
Answer:
[A].