The heats of combustion for the four C6H12 isomers shown are (not necessarily in order): 9...

The heats of combustion for the four C6H12 isomers shown are (not necessarily in order): 955.3, 953.6, 950.6, and 949.7 (all in kilocalories per mole). Which of these values is most likely the heat of combustion of isomer 1?

(a)     955.3 kcal/mol

(b)     953.6 kcal/mol

(c)     950.6 kcal/mol

(d) 949.7 kcal/mol