2-Methyl propyl bromide reacts with C₂H₅O−and gives ' A ' whereas on reaction with C₂H₅OH it gives ' B '. The mechanism followed in these reactions and the products ' A ' and ' B ' respectively are
A. SN2,A= iso-butyl ethyl ether; SN1,B= tert-butyl ethyl ether
B. SN1,A= tert-butyl ethyl ether; SN2,B= iso-butyl ethyl ether
C. SN2,A=2-butyl ethyl ether; SN2,B= iso-butyl ethyl ether
D. SN1,A= tert-butyl ethyl ether; SN1,B=2-butyl ethyl
