Arrange the following steps in a sequential order to explain the formation of convenctional currents through ventilation.
(a) the cold air enters into the room through windows from high pressure to low pressure region
(b) hot air in the room is less denser and it raises up
(c ) the rooms are prpovided with ventilators at the top
(d) hot air passes out through the ventilators it creates low pressure region in the room

Options

A. CADB
B. CDAB
C. BADC
D. CBDA

Answer

D