Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges from 35 to 36.
Ken and Tom are high-school students. They meet each other at a gallery but Ken is in a hurry.
Ken: “I’ve got to go, Tom. So long”
Tom: “So long, Ken. And _______.”
A.be careful
B.take care
C.don’t hurry
D.don’t take it seriously