Transition states and ρ values are shown for E2 elimination in two series of compounds tha...

Transition states and ρ values are shown for E2 elimination in two series of compounds that differ in their leaving group. Based on their ρ values, in which series of reactants is there a greater degree of C—H bond breaking at the transition state?

A. ArCH2CH2Br

B. ArCH2CH2N(CH3)3