Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: If dot product and cross product of \(\vec{A}\;and\;\vec{B}\)are zero, it implies that one of the vector \(\vec{A}\;and\;\vec{B}\) must be null vector Reason R: Null vector is a vector with a zero magnitude. In the light of the above statements, choose the correct answer from the options given below: