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 second cold front
◦ a warm front
◦ a stationary front
◦ an occluded front