In a world filled with uncertainty, he was glad to have many good friends. He had always assisted them in times of need and was confident that they would reciprocate. However, the events of the last week proved him wrong. Which of the following inference(s) is/are logically valid and can be inferred from the above passage?

1. His friends were always asking him to help them.
2. He felt that when in need of help, his friends would let him down.
3. He was sure that his friends would help him when in need.
4. His friends did not help him last week.
1. $(i)$ and $(ii)$
2. $(iii)$ and $(iv)$
3. $(iii)$ only
4. $(iv)$ only