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Select a Counterexample for the Given Invalid Argument \lor

Question 191

Multiple Choice

select a counterexample for the given invalid argument.
-1. (∀x) (Kx \lor Lx)
2) (∃x) ∼Kx / (∀x) Lx


A) Counterexample in a domain of 2 members, in which: Ka: True La: True
Kb: False Lb: True
B) Counterexample in a domain of 2 members, in which: Ka: True La: False
Kb: True Lb: True
C) Counterexample in a domain of 2 members, in which: Ka: True La: True
Kb: True Lb: True
D) Counterexample in a domain of 2 members, in which: Ka: False La: False
Kb: False Lb: False
E) Counterexample in a domain of 2 members, in which: Ka: True La: False
Kb: False Lb: True

Correct Answer:

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