You Are Given a Bottle of an Organic Liquid

You are given a bottle of an organic liquid and told it must be either cyclohexane or 1-hexene.Which of the following statements is (are) true about these two compounds?

A) The two compounds can be differentiated by their mass spectra because they will have molecular ion peaks at different m/z.
B) 1-Hexene will show an absorption at 1650 cm^-1 but cyclohexane will not.
C) Both cyclohexane and 1-hexene will show C-H absorptions at about 2950 cm^-1.
D) Statements B (1-Hexene will show an absorption at 1650 cm^-1 but cyclohexane will not) and C (Both cyclohexane and 1-hexene will show C-H absorptions at about 2950 cm^-1) are both true.
E) Statements A (The two compounds can be differentiated by their mass spectra because they will have molecular ions at different masses) , B (1-Hexene will show an absorption at 1650 cm^-1 but cyclohexane will not) , and (Both cyclohexane and 1- hexene will show C-H absorptions at about 2950 cm^-1) are all true.