Weather Is Confined to the Troposphere Because

Weather is confined to the troposphere because

A) terrestrial radiation provides no heat whatsoever to the other layers of the atmosphere.
B) solar radiation does not heat other layers of the atmosphere.
C) cold air sinks from the stratosphere into the troposphere.
D) the temperature of the stratosphere prevents tropospheric air from rising into it.
E) the tropopause is a physical barrier to movement.