| Assertion (A): | During urination, urine is prevented from flowing reverse into the ureter. |
| Reason (R): | Urethral sphincters relax during urination. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explains (A) |
| 3. | (A) is True but (R) is False |
| 4. | Both (A) and (R) are False |