It takes much longer to cook things in the hills than in the plains, because:

A ) Atmospheric pressure is high in the hills and water boils at a higher temperature

B ) Atmospheric pressure is lower and water boils at a lower temperature ✅

C ) Due to low atmospheric pressure in the hills the boiling point of water is raised and therefore water takes longer to boil

D ) The humid atmosphere in the hills absorbs a lot of heat, leaving very little for the cooking