JEE Advanced Mathematics question

Match the statements/expressions given in Column I with the values given in Column II. Column I: (A) Root(s) of the equation (B) Points of discontinuity of , where = greatest integer less than or equal to (C) The volume of the parallelopiped with edges represented by the vectors , and (D) The angle between vectors and , where and are unit vectors satisfying Column II: (p) (q) (r) (s) (t)

• (1)A-q,s; B-r; C-t; D-p,r,s,t
• (2)A-t; B-p,r,s,t; C-q,s; D-r
• (3)A-r; B-p,r,s,t; C-t; D-q,s
• (4)A-q,s; B-p,r,s,t; C-t; D-rCorrect