Nhận biết (M1)

While researching a topic, a student has taken the following notes:

• • Strawberries have a pH value of approximately 3.3.

• • Grapefruit juice has a pH value of approximately 4.0.

• • Substances with pH values below 7 are acidic.

The student wants to say what strawberries and grapefruit juice have in common. Which choice best uses information from the notes to do this?

• A.

  Strawberries have a pH value that makes them acidic.

• B.

  Some acidic substances have pH values of approximately 4.0.

• C.

  Strawberries and grapefruit juice have pH values of approximately 3.3.

• D.

  Strawberries and grapefruit juice are both acidic substances.