your brother wha has just entered boarding school has written a letter to you complaining about the difficulties encountered there. write a letter replying, advising and encouraging him​

I am very happy for you. You have done extremely well in your board examination. Your hard work has been rewarded.
Today you are standing at the threshold of your career. You have to take the right decision. Do not take up any stream blindly simply because of your friends or family pressure. Choose the stream of your own interest.
Since you are good in mathematics, I would advise you to take up science stream. This is my personal opinion. The final decision will be yours. Do inform me about your decision.

With love and affection,
Your brother

The answer to your question is option a

A, to visit her father at his army camp