Directions(Qs. 10 to 16): Thenumber of dolls produced by a factory in different years has been shown in thefollowing pictograph. Readthe above given pictograph and answer the following questions. By how much, production of the dolls increased in 2011 in comparison to previous year.

• A. 20,000                        
• B. 30,000        
• C. 10,000                        
• D. 40,000