Brinley says that "Gas prices are rising because there aren't enough oil refineries." Katie argues that "Gas prices are rising because of the growing demand for gasoline from China and India." We can conclude that:
A. Brinley's statement is positive; Katie's statement is normative.
B. Brinley's statement is normative; Katie's statement is positive.
C. Both statements are positive.
D. Both statements are normative.