NMR expert

please help complete a b and c it is all one question please follow each correctly

(a) The 60 MHZ H NMR spectrum of phosphoenolpyruvate (PEP) is shown below. Analyze the multiplets and assign the couplings "0_C. OPO, 20 10 HZ HA HE MM 5.4 5.1 5.3 5.2 ppm (b) The 100 MHZ 'H NMR spectrum of PEP labeled 60% with 3C at the carboxyl carbon is shown below. Analyze the multiplets and assign the chemical shifts and couplings. huhw 5.4 5.3 5.1 5.2 ppm (c) The 60 MHZ 'H NMR spectrum of PEP labeled with one deuterium atom is shown below. Draw the structure of the compound, include stereochemistry. 5.4 5.1 5.3 5.2 ppm