Wurtz reaction of certain alkyl halide 'X' yields an organic compound 3,4 -
dimethyl hexane, then which of the following is an isomer of 'X'
a. n - butyl chloride b. Isobutyl chloride
c. Tertiary butyl chloride d. Sec butyl chloride
Major product formed during the reaction between isobutyl bromide and benzene in presence of anhydrous AlCl3 is :
