Indicate whether the following statements are true, false, or uncertain.

a$)$ P $$ NP

b$)$ P $$ co$-$NP

c$)$ P $=$ NP $\backslash$cap co$-$NP

d$)$ P $=$ NP $$ co$-$NP $=$ NP

e$)$ co$-$NP $=$ NP $$ SAT in co$-$NP

f$)$ co$-$NP $$ NP $$ NP $=$ co$-$NP

g$)$ co$-$NP $$ NP $$ P $=$ NP