JEE Main 2022 Chemistry question

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Phenolphthalein is a pH dependent indicator, remains colourless in acidic solution and gives pink colour in basic medium. Reason R: Phenolphthalein is a weak acid. It doesn't dissociate in basic medium. In the light of the above statements, choose the most appropriate answer from the options given below.

• (A)Both A and R are true and R is the correct explanation of A
• (B)Both A and R are true but R is NOT the correct explanation of A
• (C)A is true but R is falseCorrect
• (D)A is false but R is true