Assertion (A): Metals generally have a lustrous appearance and are good conductors of heat and electricity.
Reason (R): Non-metals lack lustre and are usually poor conductors of heat and electricity. Choose the correct option:
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
A is false, but R is true