question_answer

Read the table carefully and answer the questions from 15 to 21.
Direction: In a slip test, a teacher asked her students to write Roman numerals for the given five numbers. The answers given by the students P, Q, R, S and T are listed in the table. Each correct answer is awarded 1 mark.
Q No.	Qs.	Answers given by the students
		P	Q	R	S	T
1	10	X	X	X	X	X
2	11	XI	XI	XI	IX	XI
3	25	VVVVV	XXV	XXV	VVVVV	XXV
4	37	XXXVI	XXXVII	XXXIIX	XXXVI	VVVVVVI
5	50	L	L	L	L	L

What is the difference of the scores of Q and S?

A)  4                                

B)       1                    

C)       3                                

D)       2