(A) tert-Butyl methyl ether on cleavage with HI at 373K gives tert-butyl iodide and methanol.
(R ) The reaction occurs by `S_(N^(2))` mechanism.
A. If both (A) and (R ) are correct and (R ) is correct explanation of (A ).
B. If both (A ) and (R ) are correct but (R ) is not correct explanation of (A ).
C. If (A) is correct but (R ) is incorrect
D. If (A) is incorrect but (R ) is correct.