Construct truth tables for the following wffs. a. (A rightarrow B) doubleheadarrow A' B b. (A B) C rightarrow A (B C) c. A (A' B') d. A B rightarrow A' e. (A rightarrow B) rightarrow [(A C) rightarrow (B C)] Construct the truth tables for the following wffs. a. A rightarrow (B rightarrow A) b. A B doubleheadarrow B' A' c. (A B') (A B)' d. [(A B) C'] rightarrow A' C e. A' rightarrow (B C') Verify the equivalences in the list on page 9 by constructing truth tables