An alkane (mol. Wt.=86) on bromination gives only two monobromo derivatives (exluding stereoisomers) the alkane is:
A. `CH_(3)-underset(CH_(3))underset(|)(C)H-CH_(2)-CH_(2)-CH_(3)`
B. `CH_(3)underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH_(2)-CH_(3)`
C. `CH_(3)-underset(CH_(3))underset(|)(C)H-underset(CH_(3))underset(|)(C)H-CH_(3)`
D. `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH_(3)`