A-B, correct; if you take your `B-P` kitchen roll,and set the `start at about4/8 o`clock,to build speed in a dive,and look `thru` the tube , the centre axis should be ` always above,seldom level,never below ` the horizon.. if the axis is below,the aircraft will have the nose below,and that is `chicken -time`,ie push ,roll upright`,and take a deep breath..
There is another video taken from inside the Transall,somewhere on Y-T, but they don`t show the wine pouring..!