All of the Following Are True About B+-Tree Indexes and Their

Multiple Choice

All of the following are true about B+-tree indexes and their files, except _____.

A) The records of the file are stored in order by key value.
B) Both a number of tracks and a number of cylinders are held empty in reserve for new record insertion purposes.
C) Every insertion of a new record requires the use of an empty reserve track or cylinder.
D) It is possible that a new record insertion can increase the number of levels of the index tree.
E) The lowest level of the index is stored on the same cylinders as the data.