Characteristics of Vertica projections based on 9.1 and 9.2 version?

Looks like a question off of the Vertica Certification Exam!

This question is available in Vertica academy > Projections course.
The answer is D in this case.. i.e.
1. A projection can contain a subset of columns from the anchor table.
2. A projection can contain data from only one anchor table.
3. Each projection contains all rows from the anchor table.
No question about first point.
From 9.2 onwards perspective pre-Join projections are not supported so good with second point as well.
The third point talks about all rows from the anchor table, but Top K projection does not contain all the rows from the table.

@ersaurabhex - Per you comments (in which I agree) the answer to the question is:

E. None of the above

I remember taking the exam back in 2011 and I questioned these types of questions. I found out the exam at that time was written by a non-technical person and that lead to the inconsistencies.