Q26

MCQ2 marks, −0.67

Consider the following well-formed formulae: Which of the above are equivalent? $\text{I}$ and $\text{III}$ $\text{I}$ and $\text{IV}$ $\text{II}$ and $\text{III}$ $\text{II}$ and $\text{IV}$

(A)

$\neg \forall x(P(x))$

(B)

$\neg \exists x(P(x))$

(C)

$\neg \exists x(\neg P(x))$

(D)

$\exists x(\neg P(x))$

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