Which of the following statements about sexual reproduction in flowering plants are correct?_x000D_ 1. Stamen is present in the centre of a flower._x000D_ 2. Stamen produces pollen grains in the ovary._x000D_ 3. The swollen bottom part of carpel is the ovary._x000D_ 4. The fusion of germs cells gives rise to zygote._x000D_ Select the correct answer using the code given below.

• A. 2, 3 and 4 only.
• B. 2 and 4 only.
• C. 1 and 3 only.
• D. 1, 2, 3 and 4