Which of the following is correct regarding the pH scale?
A) A substance with a pH of 3 is 10 times more alkaline than a substance with a pH of 4.
B) A substance with a pH of 3 is 100 times more alkaline than a substance with a pH of 4.
C) A substance with a pH of 3 is 1000 times more alkaline than a substance with a pH of 4.
D) A substance with a pH of 3 is 10000 times more alkaline than a substance with a pH of 4.