If you have a look in your Descent Page (DES), 'V/B' indication means:
A.A.Actual flight path angle based on present ground speed & vertical speed (Vertical Bearing or Total Vertical Speed)
B.B.Vertical bearing direct from present position on the WPT/ALT line(the flight path angle required if flying direct to the waypoint & altitude on the WPT/ALT line)
C.C.The required vertical speed (in degrees) based on ground speed
D.D.The required vertical speed (in fpm, based on present ground speed) to fly the dispmayed V/B
正确答案是B