If the discriminant (D) of a quadratic equation is 4, which statement about its roots is correct?

Correct answer: The roots are real and distinct

The nature of the roots of a quadratic equation is determined by its discriminant. Here, D = 4, so D > 0; therefore, the roots are real and distinct. Option B is incorrect because equal real roots occur when D = 0. Exam tip: remember D > 0, D = 0 and D < 0 as distinct real, equal real and non-real roots, respectively.