Make correct statements by filling in the symbols ⊂ or ∈ 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 is a 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}