Choose all the quadrants where the x- and y-coordinates of a point have the same signs.

a. i
b. ii
c. iii
d. iv

I think the correct answers from the choices listed above are options A and C. The quadrants where the x- and y-coordinates of a point have the same signs are quadrants I and III. The former has positive sign while the latter have the negative sign for both points, x and y.