for over land and from 2000ft agl to the surface..the general rule is that the wind backs around 30 degrees and reduces by about 50%
so from 1000ft...you would assume its already backed by 15 degrees and the speed is down by 25% so do the same again to get an estimate of it at surface. sooo my guess would be 315 and about 11kts. i'd go for B, but it could be C...awful when you get values inbetween 2 of theres.
for the 2nd one.....go the opposite way..add 30 degrees and 50% of speed.sooo 250/37 kts. again i'd say B.
not the biggest fan of met myself...!!