Match the diseases in Column I with their respective causes given in Column II

	Column I		Column II
i	Alzheimer's disease	a	oversecretion of Growth Hormone from pituitary gland in adults.
ii	Diabetes mellitus	b	degeneration of dopamine producing neurons in CNS.
iii	Acromegaly	c	underactivity of Beta cells of pancreas.
iv	Parkinson's disease	d	Degeneration of cholinergic and other neurons in CNS.

Select the correct option from the following

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.