Physics · Electrostatic Potential

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): When a dielectric slab is placed in an external electric field, the opposing field generated by induced charges completely cancels out the external field inside the dielectric. Reason (R): Dielectric materials have no (or a negligible number of) free charge carriers to facilitate complete charge neutralization. In the light of the above statements, choose the correct answer from the options given below:

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. is true but (R) is false.
4. is false but (R) is true.