12. What do you think is a ready-made friend, as mentioned in Para. 3 Line 4?

A、Afriendwhoisalwaysreadytohelpyou.
B、Afriendwhooffersyouhelpwhenyouareinrealneed.
C、Afriendwhowillmakeeverythingreadyforyou.
D、Afriendwhoiseasilyandimmediatelyavailable.