Given below are six sentences. A and F are the first and the last sentences. The rest of the sentences namely B, C, D and E are jumbled. Select the option that gives their correct order.
A. When they reached the great city, they were frightened by the size of it and by the crowds in the streets.
B. However, they visited every street, stopping wherever they saw a crowd.
C. They were afraid they would not even recognise him, for they had not seen him for fifteen years.
D. They felt that their son would be somewhere among those people. E. But they did not know how to find him. F. They hoped for a chance meeting.