Answer:
Sir, Through this letter you have to inform that I am getting very high electricity bill for last 2 months which is about Rs. 20000 is more. It appears that there has been an unexpected increase in the bill, because I know that our electricity consumption is not so high.
Explanation:
are you okay? do you need help with something?
I am pretty sure it's free verse
Situational irony, or C, is correct because the situation turned out opposite than expected.
I would choose manuscript style for this. the reason for that is because you know exactly what you're going to say you can't be misquoted because everything is written down right in front of you and this is a more formal style