Solve the Equation $\sqrt { z } + 8 = 1$

Solve the equation. Write all apparent solutions. Which of them are extraneous? $\sqrt { z } + 8 = 1$

A) 7, 49
B) 7, there are no extraneous solutions
C) 49, there are no extraneous solutions
D) 7 is extraneous, no solution
E) 49 is extraneous, no solution