A chemist isolated a compound A with molecular formula C_(7)H_(13) Br. A undergoes very fast S_(N)1 reaction. Spectroscopic evidence indicatedthat compound A has the following structural characteristics. . It contains fnive sp_(3) hybridised carbon atoms. Among those five SP^(3 ) carbon atoms are three methyl groups, one CH_(2)groupand one CH group. . It also contains two SP_(2)-hybridised carbonatoms . Alsothere is onlyone hydrogen atom attched to sp^(2)carbons. . The compound contains a total of six allylic hydrogen atoms. . The carbon atom that holds the Br has one H attached to it. When compound A reacts with boiling water , it undergoes an S_(N)1 reaction and produces. two principal products B and C . Both B andC are alcohols with their molecular formula C_(7)H_(14)O. Among the two alcohols, B has the --OH group attached to an sP_(3) carbon atom that has no H atoms bonded to it . If the starting compound A is brominated in gas phase in presence of a Lewis acidcatalys, a tribromide would result from addition of Br_(2) to C=C . How many different structures of stereo isomers isomers canbe drawn for this tribromide ?