Some of the class will undoubtedly choose A. Their reasons for this choice may be as follows:
1. The uncurtained window space is more or less diamond shaped.
2. The four sections of the curtains are almost exactly alike.
Others will choose B, and give such reasons as follows:
1. The window space is less noticeable.
2. There is more variety in the curtains.
3. It is more interesting if the eye can travel down the longer part of the curtain and then come to rest at the part tied back.
These reasons will probably lead the majority of the class to decide that B is more desirable than A.
At this time another arrangement designated as C may be introduced. For this, one curtain at the second window may now be tied back so near the sill that the two parts do not seem to be related. One designated as D may also be introduced, in which the arrangement is exactly like that of B, except that the curtains are tied back above the center instead of below.