question_answer

Study the following statements

1. Litmus solution is a purple dye which is extracted from lichen and is commonly used as an indicator.

2. Red cabbage leaves, turmeric, coloured petals of some flowers indicate the presence of acid or base in a solution.

3. Some substances whose odour changes in acidic or basic medium are called olfactory indicators.

Which of the statements given above are correct?

A)  1, 2 and 3        

B)  1 and 2

C)  1 and 3

D)  2 and 3