What means exclamation mark ! at Existential quantifier?

Question

What means   exclamation mark   !    at  Existential quantifier?

Accepted Answer

exclamation mark !  emphasizes that  "there is   exactly 1  instance"

Answer

exclamation mark !  emphasizes that  "there is   more than 1  instance"

Answer

exclamation mark !  emphasizes that  "there are   exactly 2  instances"

Answer

exclamation mark !  emphasizes essential role of this quantifier

Answer

exclamation mark !  emphasizes that  "there are   exactly 0  instances"

Answer

exclamation mark !   turns the meaning of the quantifier into the opposite

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