Given below are two statements, one is labeled as Assertion (A), and the other one is labeled as Reason (R).
Assertion (A) : Screening of rice for resistance to stem borer is greatly facilitated in the off-season as compared to that in the main growing season.
Reason (R) : In the off-season, few alternate hosts are available for the female moths of the stem borer to lay eggs and hence much heavier infestation occurs in the off-season rice.