Assertion : An electron and positron can annihilate each other creating a photon.
Reason: Electron and positron form a particle and anti-particle pair.
A. If both, Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
B. If both, Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
C. If Assertion is true but the Reason is false.
D. If both Assertion and Reason are false.