The list l consists of four integers w^2, x^2, y^2, z^2 in increasing

The list l consists of four integers w^2, x^2, y^2, z^2 in increasing order. Which of the following list of integers must have the same standard deviation as list L? (A) w, x, y, z (B) w^2 – 4, x^2 – 4, y^2 – 4, z^2 – 4 (C) w^4, x^4, y^4, z^4 (D) w^2/ 2, x^2/ 2, y^2/ 2, z^2/ 2 (E) 4w^2, 4x^2, (…)