(Table) According to the Table, in a Two-Person Market That $\quad$

(Table) According to the table, in a two-person market that includes person A and person B, the willingness to pay for the third doughnut is: $\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\text {Willingness to Pay for One,}$
$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\text { Two, Three, or Four }$
$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\text {Doughnuts}$
$\begin{array} { l c c } & \text { Person A } & \text { Person B } \\ \text { First Doughnut } & \$ 5 & \$ 8 \\ \text { Second Doughnut } & \$ 3 & \$ 6 \\ \text { Third Doughnut } & \$ 2 & \$ 4 \\ \text { Fourth Doughnut } & \$ 1 & \$ 0 \end{array}$

A) $2.
B) $4.
C) $5.
D) $6.