Questions 11 to 18 are based on the conversation you have just heard.

A．Neither Young nor Silvia has got an M.A. degree till now.
B．After four years’ study, both Young and Silvia have got M.A. degrees.
C．Young and Silvia have a child in the fourth year of their marriage.
D．After four years’ marriage, Young and Silvia decided to start the family with a child.