Differentiate between the conjunction types: ‘and’ vs ‘although’. What is the main difference?

A. ‘And’ indicates a cause, whereas ‘although’ indicates a result.

B. ‘And’ is used only in questions, while ‘although’ is used in statements.

C. Both ‘and’ and ‘although’ serve the same purpose in a sentence.

D. The main difference is that ‘and’ connects similar ideas, while ‘although’ introduces a contrast.