You Are in Mid-Latitudes in Winter

You are in mid-latitudes in winter.You experience heavy snow followed by a dramatic drop in temperature as a cold front passes,but for almost 24 hours the weather is clear.Then,high clouds appear in the west,thicken to stratus clouds and you receive a light new snowfall (aka snow flurries) but the temperature remains cold.You have just seen the passage of ________.

A) a second cold front
B) a warm front
C) an occluded front
D) a stationary front