What is the solution of mc018-1.jpg ? (picture added)

The solution to the algebraic expression will be:
sqrt(1-3x)=x+3
squaring both sides we get:
1-3x=(x+3)^2
1-3x=x^2+6x+9
this can be written in quadratic form as:
x^2+6x+3x+9-1=0
x^2+9x+8=0
factorizing the above we get:
x^2+9x+8=0
x^2+x+8x+8=0
x(x+1)+8(x+1)=0
(x+8)(x+1)=0
thus;
x+1=0
x=-1
and
x+8=0
x=-8
hence the answer is x=-1 or x=-8
the correct answer is A