Stream of consciousness rationale: Adult sponges produce eggs and sperm. Adults are sexually mature. Mature sponges produce eggs and sperm.
The question and answer pair are described below.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Q: Mature sponges produce what?
Options:
- (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
A: (A)