Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Meiosis I that occurs during oogenesis is an unequal division.
Reason (R) : it is a reductional division
In light of the above statements, choose the most appropriate answer from the options given below.

Both (A) and (R) are correct but (R) is not the correct explanation of (A).

Assertion (A) is true. Meiosis I in oogenesis is indeed an unequal division because it results in the formation of one large secondary oocyte (which receives most of the cytoplasm) and one smaller first polar body. This size asymmetry is due to the unequal distribution of cytoplasm and organelles between the daughter cells.

Reason (R) is true but does not explain assertion (A). While it is true that meiosis I reduces the chromosome number (from diploid to haploid), this is not the reason why meiosis I during oogenesis is considered unequal. Reductional division refers to the separation of homologous chromosomes, not to the size disparity between daughter cells.