Ann,you know you're the best one for the job.That's why they

Ann,you know you're the best one for the job.That's why they picked you to do it.They are depending on you,and if you resign,you'll leave them high and dry, with nobody to do the job.
high and dry怎样理解?
A.功亏一篑 B.好高骛远 C.半途而废 D.釜底抽薪