When Estimating Probit and Logit Models, A $t$ -Statistic Should Still Be Used for Testing a Single Restriction

Short Answer

When estimating probit and logit models, a. the $t$ -statistic should still be used for testing a single restriction.
b. you cannot have binary variables as explanatory variables as well.
c. $F$ -statistics should not be used, since the models are nonlinear.
d. it is no longer true that the $\bar { R } ^ { 2 } < R ^ { 2 }$ .