Which complex number will be located above the real axis and to the left of the imaginary axis?

The correct answer for this question is this one: " d) - 1-2i " Any complex number with a negative real part and positive imaginary part. It has to be of this form,

a+bi so that a<0 and b>0.

Here are the following choices:

a) 4i

b) 2-4i

c) 4i-1

d) - 1-2i