Choose the correct statement about chloroform.
(A) It slowly reduces in air in the presence of sunlight to form phosphene gas.
(B) It should be stored in closed dark coloured bottle completely filled to keep air out.
(C) It is when exposed to sunlight in the presence of air forms a gas phosgene.
(D) Chronic chloroform exposure causes damage to liver.
Choose the correct answer from the options given below :

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.