| Assertion (A): | Electrical excitability is a property of nervous tissue but not of muscular tissue. | 
| Reason (R): | The ability to respond to internal and external stimuli is lacking in muscular tissue. | 
| 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. |