Assertion : If q be the angle between \[\vec{A}\] and \[\vec{B}\], then \[\tan \theta =\frac{\vec{A}\times \vec{B}}{\vec{A}.\vec{B}}\] Reason : \[\vec{A}\times \vec{B}\] is perpendicular to \[\vec{A}.\vec{B}\]

• 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 the correct explanation of the assertion.
• C.      If assertion is true but reason is false.
• D.      If the assertion and reason both are false.
• E.      If assertion is false but reason is true.