A plant placed near a window bends outwards because [CPMT 1989]

• A. Its tip is able to get more oxygen
• B. Its tip is able to obtain more light
• C. Its tip is able to receive necessary warmth
• D. The auxin contents on the shadow side is higher than that on the lighter side and as a result the shaded side elongate more than the cells on the illuminated side and the tip bends outwards