[A]: One diploid embryo sac mother cell develops within the nucellus of the ovule.
[R]: Embryo sac mother cell divides meioti- cally and one of the cells produced becomes the haploid embryo sac.

Options

A. 1)If both A and R are true and R is the correct explanation of A
B. 2)If both A and R are true but R is not the correct explanation of A
C. 3)If A is true and R is false
D. 4)If both A and R are false

Answer

B