Confused on how to word this centre of mass problem with steel beams

For the diagram:


I was given the question: "Explain why the centre of mass of the beam in the diagram must be vertically below A".
(see my reply for link to the image...)
my answer: both cables meet at A for which they are perpendicular to each other and the beam is in equilibrium and stationary. Hence centre mass is at A, as it's component of tension is directly above the weight of beam for which it's angle is 90 degrees from the horizontal