Constraints:

A: is a $$ constraint

B: is a $$ constraint

$C$ : is $a$ constraint

$D$ : is $a$ constraint

Given the information and the graph above and the fact that the optimal solution occurs where the black dot is on the graph, which of the following statements is FALSE?

a$)$ Constraints $B$ and $D$ are binding

b$)$ Constraint $C$ is redundant

c$)$ Constraint $D$ has a positive slack

d$)$ Constraint A has zero dual price