underset((A))(CH_(3)-underset(Br)underset(|)overset(CH_(3))overset(|)(C)-CH_(3))+underset((B)(CH_(3)-overset(CH_(2)-Br)overset(|)(C)H-CH_(3)) CH_(3)-overset(CH_(3))overset(|)(C)H-CH_(3)overset(Br_(2))to the percentage yield of 'A' is (The relative reactivities of 1^(@),2^(@),3^(@)- hydrogens 1:3.8:5)

underset((A))(CH_(3)-underset(Br)underset(|)overset(CH_(3))overset(|)(

1.	underset((A))(CH_(3)-underset(Br)underset(\|)overset(CH_(3))overset(\|)(C)-CH_(3))+underset((B)(CH_(3)-overset(CH_(2)-Br)overset(\|)(C)H-CH_(3)) CH_(3)-overset(CH_(3))overset(\|)(C)H-CH_(3)overset(Br_(2))to the percentage yield of 'A' is (The relative reactivities of 1^(@),2^(@),3^(@)- hydrogens 1:3.8:5)
Answer» 0.36 0.64 0.72 0.28 Answer :A