When Establishing an Isometric Axis, You Need

When establishing an isometric axis, you need:

A) a vertical line, two 30° angular lines, and a horizontal line.
B) a ground level line, a horizontal line, and two 30° angular lines.
C) a vertical line, a horizontal lines, and a 30° angular line.
D) a measurement line, a vertical line, and two 30° angular lines.
E) none of the above