Assertion (A): a Person Is Not Guilty of Dacoity Unless

Assertion (A) : A person is not guilty of dacoity unless he has committed, attempted to commit or aided in committing robbery. Reason (R) : When tow persons conjointly commit robbery, then every person so committing robbery is said to commit dacoity.

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