GMAT Critical Reasoning (CR) | The cost of housing in..

The question is about improving housing prospects. To me, (A) seems to be the better choice as it at least doesn't add to the huge "mortgage commitments". The question asked is related to family and child only by the fact that they add to the already heavy housing cost. From the given information, (A) stands out for me. (A) and (C) are similar in that they both encourage more or less the same thing: "staying childless" and "postponing families". (C) has an additional