Assertion (A): There is effective filtration pressure development in glomerulus.
Reason (R) Afferent arteriole is slightly wider than the efferent arteriole.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.