Statement: Pramod decided to get the railway reservation in May, for the journey he wants to make in July, to Madras.
Assumptions:
1. The railways issues reservations two months in advance.
2. There are more than one trains to Madras.
3. There will be vacancy in the desired class.
Answer: A
Clearly, since Pramod decides to get the reservation in May for the journey in July, so I is implicit. The number of trains to Madras or the position of vacancies in different classes cannot be deduced from the given statement. So, neither II nor III is implicit.