Match the options of the following columns.
`{:("Column I", "Column II"),("For real extended object,if image formed by a single mirror is erect, and if the size of image is smaller than object, the mirror is", (P)"Concave"),("For real extended object, if the size image is smaller than object, the mirror is", (Q)"Convex"),("For real extended object, if image formed by asingle mirror is erect and if the size of image is larger than object, then mirror is"" ",(R)"(f,f)"),("For spherical mirrors, a line u=v will cut the curve between u and v at a point.", (S) "(2f,2f)"):}`
