Assertion (A): After the Revolt of 1857 in India, the British recruited the soldiers in the British Indian Army from Punjabi, Gurkha and Pathan Communities on a large scale and declared them as martial communities. Reason (R): The soldiers from these communities staunchly secured the British interests outside India on a large scale. Select the correct answer using the codes given below:

• A.  Both A and R are true and R is correct explanation of A.
• B.  Both A and R are true but R is not correct explanation of A.
• C.  A is true but R is false.
• D.  A is false but R is true.