Are these statements true or false The universe of discourse

Are these statements true or false? The universe of discourse is the set of all people, and T(x,y) means \"x and y are twins.\" Explain how you determined your solution.

Universal quantifier = UQ and Existential quantifier = EQ

a. UQx ~T(x,x)

b. EQy T(y,y)

c. EQx UQy T(x,y)

d. UQx ~EQy T(x,y)

e. EQx ~EQy T(x,y)

f. UQx ~UQy T(x,y)

Solution

Explain how you determined your solution.

Universal quantifier = UQ and Existential quantifier = EQ

D. EXQ