A shopkeeper bought an article for Rs.1000 and marked its price as Rs.2160. He gave three successive discounts of a%, b% and c%, where a + b + c = 50. If he made a profit of x% finally, then what is the difference between maximum value of x and minimum value of x ?
A. 10
B. 17
C. 24
D. 30
E. 33.33
A. 10
B. 17
C. 24
D. 30
E. 33.33