3. When aluminum or vinyl siding has been added to a house in the past...

a.      the guidelines require that it be removed immediately.

b.     the guidelines require that it be removed within 5 years.

c.    the owner would not be allowed to replace damaged aluminum siding with new aluminum siding.

d.     removing the aluminum or vinyl siding is highly recommended.

WRONG

The guidelines are intended to guide changes that owners plan to make to historic buildings. They  do not force the owners to make any changes.