40Mass Spectrometry Infrared SpectroscopyMedium1 markThe mass spectra of pentane and methylbutane are compared. Which statement is correct?AThe methylbutane spectrum has an M+1 peak but the pentane spectrum does not.BThe molecular ion peak has a higher m / e value on the pentane spectrum.CBoth spectra have a peak at m / e 43.DThe pentane spectrum has a peak at m / e 29 but the methylbutane spectrum does not.Grade answerSolutionGrading criteria