Barbara completed an assignment for extra credit in science class. She used a pH meter to find the pH of different substances. After she finished measuring the pHs, she created a diagram that showed the substances arranged in order from the most acidic to the most basic.

If Barbara added lemon juice—pH 2.2—to her investigation, where should it appear in her diagram?
A.
between milk and water
B.
to the left of cola
C.
between soap and bleach
D.
between water and blood