Identify the error or errors in this argument that supposedly shows that if ∀x(P(x) ∨ Q(x)) is true then ∀xP(x) ∨ ∀xQ(x) is true. 1. ∀x(P(x) ∨ Q(x)) Premise 2. P(c) ∨ Q(c) Universal instantiation from (1) 3. P(c) Simplification from (2) 4. ∀xP(x) Universal generalization from (3) 5. Q(c) Simplification from (2) 6. ∀xQ(x) Universal generalization from (5) 7. ∀x(P(x) ∨ ∀xQ(x)) Conjunction from (4) and (6) 25. Justify the rule of universal modus tollens by showin