For Which of the Following Compounds Will the (M+2)⁺

Multiple Choice

For which of the following compounds will the (M+2) ^{+ .} peak intensity be around one third the intensity of the molecular ion peak?

A) CH₃CH₂CH₂Br
B) CH₃CH₂CH₂OH
C) CH₃CH₂CH₂Cl
D) CH₃CH₂CH₂NH₂
E) none of these