Which of the following experimental plans will test the effects of pressure on a reaction with gases and what is the expected result?

A) Keep pressure constant and increase the temperature of the reaction; reaction rate will decrease.

B) Keep temperature constant and increase the pressure of the reaction; reaction rate will increase.

C) Keep pressure constant and decrease the temperature of the reaction; reaction rate will decrease.

D) Keep temperature constant and decrease the pressure of the reaction; reaction rate will increase.