Which of the following acts as a passage for pollen tube to reach ovary to fertilize the egg?

The statements given below describe certain features that are observed in the pistil of flowers.
(i) Pistil may have many carpels.
(ii) Each carpel may have more than one ovule.
(iii) Each carpel has only one ovule.
(iv) Pistil has only one carpel.

Choose the statements that are true from the options below.

Assertion $\left(\mathrm{A}\right)$: Pollen mother cells $\left(\mathrm{PMC}\right)$ are the first male gametophytic cells.

Reason $\left(\mathrm{R}\right):$ Each pollen mother cell $\left(\mathrm{PMC}\right)$ produces two pollen grain.