Which statement is the Law of Syllogism?
A. If p Arrow q is a true statement and p is true, then q is true.
B. If p Arrow q is a true statement and q is true, then p is true.
C. If p Arrow q and q Arrow r are true statements, then p Arrow r is a true statement.
D. If p Arrow q and q Arrow r are true statements, then r Arrow p is a true statement