Don't forget turn off the lights when you leave,_______?A,don't you B,do you C,won't you D,will you选什么，为什么

Don't forget turn off the lights when you leave,_______?
A,don't you B,do you C,won't you D,will you
选什么，为什么

D；祈使句的反意疑问句 除Let's用shall we外 均用will you反问.