Read the following assertion and reason to give the correct answer.
1.
| Assertion (A): | The apparent brightness of stars fluctuates more noticeably than that of planets. |
| Reason (R): | Light from stars undergoes atmospheric refraction, but light from planets does not undergo atmospheric refraction. |
2.
| Assertion (A): | The apparent brightness of a star may change continuously when observed from the Earth. |
| Reason (R): | The Earth's atmosphere consists of moving layers of air with varying densities and refractive indices. |