Refer to the given figure and select the correct option.

Options

A. When solution of copper sulphate and caustic soda are added in test tubes P and Q and shaken, the colour of solution in test tube P will change into blue-black whereas in it will change into purple.
B. When iodine solution is added into test tubes P and Q, the colour of solution in test tube P will remain unchanged whereas in 0 it will change into blue-black
C. When Benedict's solution is added into test tubes P and Q and heated, the colour of solution in test tube will remain unchanged whereas in Pit will change into reddish orange.
D. Both B and C

Explanation

Potatoes are rich in starch and starch gives blue-black colour with iodine. Meat is rich in proteins and proteins give purple colour on adding copper sulphate and caustic soda.