II$\mathrm{.}3.$d$)$ Player $1$ now assumes that Player $2$ will play the strategy s$2$ in II$\mathrm{.}3.$c$.$ Suppose that Player $1$ adopts a similar strategy, s$1$: "I want to exchange my car if it's value to me is not too high, i$.$e$.$ it does not exceed the value x$,$ where $0$