Provided below are the infrared (IR) spectra of the starting material and product in this experiment. Correctly identify the important peaks (stretching frequencies in reciprocal):
a) Peaks in the IR spectra represent changes in bond lengths and strengths.
b) Peaks in the IR spectra correspond to specific functional groups present in the molecules.
c) Peaks in the IR spectra indicate changes in molecular weight during the reaction.
d) Peaks in the IR spectra are primarily influenced by temperature changes in the reaction vessel.