What is occurring during midwinter in the Northern Hemisphere?

A) The earth is moving in its orbit from the September equinox to the March equinox.

B) The earth is moving in its orbit from the December solstice to the June solstice.

C) The earth is moving in its orbit from the March equinox to the September equinox.

D) The earth is moving in its orbit from the June solstice to the December solstice.