Which of the following are correct?

a$-$ False $|=$ True.

b$-$ True $|=$ False.

c$-($A$$B$)|=($A $$ B$).$

d$-$ A $$ B $|=$ A $$ B$.$

e$-$ A $$ B$|=$A $$ B$.$

f$-($A$$B$)$ C$|=($A $$ C$)($B $$ C$)$