I think that this is the question that you mean:
While crossing a jetstream at right angles in Western Europe (3000 FT below its core) and OAT is decreasing, what would be the prevailing wind?
A)Crosswind from the right
B)A headwind.
C)A tailwind.
D)Crosswind from the left
The right answer would be D for sure.
In you question would be starboard drift.
Here you have an other example:
An aircraft over Western Europe is crossing a jet stream 2500 FT below its core at right angles. While crossing, the outside temperature is increasing. The prevailing wind is:
A)tailwind.
B)headwind.
C)from the right
D)from the left.
The right answer would be C
I hope that this helps
