Question $10(1$ point$)$Consider the following sentence:

notEExEEyEEz$((notx=y^{{?}^{?}}$notx$=z{)}^{{?}^{?}}(H(x{)}^{{?}^{?}}(H(y{)}^{{?}^{?}}H(z))))$

It is true if and only if which of the following is true?

There is at most one hero.

There are exactly three heroes.

There are at most three heroes.

There are no more than two heroes.

On Russell's analysis of definite descriptions, which of the following is entailed by

"Exactly one A is B$"?$

Some A is B$.$

Every $A$ is $B.$

The $B$ is $A.$

The $A$ is $B.$