Statement A: In more than 60% of angiosperms, pollen grains are shed at 2-celled stage.

Statement B: In less than 40% of angiosperms, the generative cell divides mitotically to give rise to the two male gametes before pollen grains are shed

In over 60 per cent of angiosperms, pollen grains are shed at this 2-celled stage (contains two cells, the vegetative cell and generative cell). In the remaining species, the generative cell divides mitotically to give rise to the two male gametes before pollen grains are shed (3-celled stage).