Which of the following statements is true? 1)Image formed by concave lens is always virtual. 2) Images formed by convex lens is always real. 3) Images formed by convex mirror is always virtual 4) Images formed by concave mirror is always real.

Question

$(a)\;\text{1 and 3 } \\(b)\;\text{1 and 4 } \\(c)\;\text{3 Only } \\(d)\;\text{4 Only} $