Q02,xviMCQMarks unknownWhich of the following is/are a tautology?(A)a∨b→b∧ca \vee b \to b \wedge ca∨b→b∧c(B)a∧b→b∨ca \wedge b \to b \vee ca∧b→b∨c(C)a∨b→(b→c)a \vee b \to \left(b \to c \right)a∨b→(b→c)(D)a→b→(b→c)a \to b \to \left(b \to c \right)a→b→(b→c)Sign in to save attempts.Show answer← PreviousNext →SolutionsDiscussionLoading…Sign in with Google