26-A simulation of the isotopic pattern for the parent peak in the mass spectrum ofacetonitrile (CH3CN) gives peaks at m/z = 41, 42 and 43 with relative intensities 100.00 :2.65: 0.02. An experimental mass spectrum shows intense or relatively intense peaks at m/z = 38, 39, 40 and 41. What is the likely reason for the difference between the two sets of data?a-In the mass spectrometer, C-H bond cleavage occurs. b-In the mass spectrometer, C-C bond cleavage occurs.c-The simulation of an isotopic distribution pattern for a molecule is unreliable.-In the mass spectrometer, C-N bond cleavage occurs.