Geometric description

Give a geometric description of the set of points whose coordinates satisfy the given conditions. et 1287 and Assoc x = 3, z=7 O A. The line through the point (3,0,7) and parallel to the y-axis O B. All points in the xz-plane O C. The line through the point (3,7,0) and parallel to the z-axis O D. The point (3,0,7)