Deduce the Identity of the Compound from the Data Provided

Multiple Choice

Deduce the identity of the compound from the data provided. C₈H₁₃Br: IR (cm^-1) : 2950,2150
¹H NMR (δ,splitting,integral) : 3.5 (t,2H) ,1.8 (t,2H) ,
0) 9 (s,9H)
¹³C NMR: 6 signals

A) CH₃CHBrCCC(CH₃) ₃
B) HCCCH₂C(CH₃) ₂CH₂CH₂Br
C) 3-bromo-1,2-dimethylcyclohexene
D) 4-bromo-1,2,4-trimethylcyclopentene
E) BrCH₂CH₂CCC(CH₃) ₃