"On which day of the week did Atul reach Bombay"?
(1) Atul's brother reached Bombay one day earlier than Atul.
(2) Atul's mother reached Bombay on Thursday which was two days later than the arrival of his brother.

Explanation

Statement (1) satisfies condition (B) above because here the number of days between an earlier incident (Atul.s brother.s reaching Bombay) and the required day has been given. Now, we need to know the day when that earlier incident took place [ as in (A)]. In other words, we need to know on which day Atul.s brother reached Bombay. For this, we turn to the second statement. It says that Atul.s mother reached Bombay on Thursday, which was two days later than the arrival of his brother. Here, the number of days between .Atul.s mother.s reaching Bombay. and .Atul.s brother.s reaching Bombay. are given. Also, the exact day of .Atul.s mother.s reaching Bombay. is given. Hence, both the data - type (A) and (B) - are given. Thus, we can find out the day of .Atul.s brother.s reaching Bombay..
Therefore, both the statement together are sufficient because the first statement supplies the gap between the required incident and an earlier incident and the second statement supplies the day of the earlier incident. .C. is the answer.