Containers P and Q are placed under the sun for 4 hours. The water level in container Q dropped by 5 cm while the water level in container P dropped by 2 cm. What are the factors that caused the difference in the water levels of the two containers? (i) Width of container (ii) Presence of wind (iii) Presence of light

• A.  Only (i)      
• B.     Only (ii)   
• C.     Only (ii) and (iii)     
• D.     (i), (ii) and (iii)