| Assertion(A): | Transfer of electrons from the split water molecule to P680+ is easy. |
| Reason(R): | P680+ is the strongest biological oxidizing agent known. |
| 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. |