Make correct statements by filling m the symbols `sub`or `cancelsub`in the blank spaces :
(i) `{2, 3,4}. . .{1, 2, 3, 4,5}`
(ii) `{ a , b , c }. . .{b , c , d }`
(iii) {x: x is a student of Class XI of your school}. . . {x : x student of your school}
(iv) {x : x is a circle in the plane} . . .{x : x is a circle in the same plane with radius 1 unit}
(v) {x : x is a triangle in a plane} . . . {x : x is a rectangle in the plane}
(vi) { x : x is an equilateral triangle in a plane} . . . { x : x is a triangle in the same plane}
(vii) {x : x is an even natural number} . . . {x : x is an integer}