“if senator foghorn’s round-the-world trip was paid for by the saudis in return for his support of legislation favorable to opec, then senator foghorn is dishonest. after all, if his trip was financed by the saudis in return for his support of legislation favorable to opec, then he accepted a bribe. and if he accepted a bribe, then he is dishonest” is:
a) modus ponens
b) modus tollens
c) contraposition
d) disjunctive syllogism
e) hypothetical syllogism