Which of the Following Would Not Have a C-H Stretch

Multiple Choice

Which of the following would not have a C-H stretch at about 3050 cm^-1?

A) 1-pentene
B) 2-pentene
C) 2-methyl-2-pentene
D) 2,3-dimethyl-2-pentene
E) 2,4-dimethyl-2-pentene