Given the bond dissociation energies below (in kcal/mol), calculate the overall ΔH° for the following reaction:

(CH₃)₃CBr₂ → (CH₃)₃CBr + HBr

a) -132 kcal/mol
b) -82 kcal/mol
c) -46 kcal/mol
d) -70 kcal/mol