Six lectures A, B, C, D, E and F , each of one hour duration, scheduled between 8:00 am and 2:00 pm Consider the following question and two statements: Question: Which lecture is in the third period Statement-1: Lecture F is preceded by A followed by C . Statement-2: No lecture after lecture B . Which of the following is correct regarding the question and the statements?

Option 4 : Both statement-1 and statement-2 are not sufficient to answer the question

Option (4) is the correct answer.

Statement-1: Lecture F is preceded by A and followed by C :  It only indicates three of these lectures as A followed by F followed by C, but does not give the exact position.

Statement-2: No lecture after lecture B :  This only indicates that lecture B is at the end, ie from 1:00 pm to 2:00 pm.

Individually as well as the two statements are not enough to find out about the third lecture. 

So, correct answer option(4) means,  both statement-1 and statement-2 are not sufficient to answer the question.