Observe the given experimental set-up carefully.
Which of the following could be the possible observation and inference drawn?
(A) The solution becomes blue-green due to formation of copper oxide, P is acidic.
(B) The solution becomes blue-green due to formation of copper chloride, P is basic.
(C) The solution becomes white due to formation of calcium hydroxide, P is basic.
(D) The solution becomes white due to formation of calcium oxide, P is acidic.
