Reactance theory suggests person X will be least likely to go along with person Y when Y states

A) "I think I am going to adopt plan A.What are you going to do?"
B) "From my point of view,plan A seems to be the best choice."
C) "I think it is pretty obvious we should both work on plan A."
D) "I like plan A the best."

Reactance Theory

Suggests that individuals may react against threats to their freedom of choice by doing the opposite of what they are being pushed towards, to reassert their autonomy.

Plan A

The primary strategy or course of action intended to achieve a specific goal before any alternatives are considered.

Likely

Having a high probability of occurring or being true.