2.In Figure 4B-1, the leading edge of the Arctic air mass was across northern Texas and the
Panhandle. From roughly Tulsa, OK southwest to Dallas/Ft. Worth and Midland, TX, a(n)
front curved southwestward, with bitterly cold air to the north of the front and milder,
warmer air to the south and west. The greatest thermal contrast was from Midland, TX to
Wichita, KS.
a.warm
B.Stationary
C.cold
D.occluded