Mary is the new facility security officer and has been informed that incombustible and fire-resistant material has been integrated into the exterior walls of the facility. Which of the following is an incorrect description of this situation?

A.
Incombustible material provides a high level of fire protection but loses its strength under extreme temperatures

B.
Steel will not burn, it may melt and weaken

C.
The construction material has heavy timber construction material

D.
The construction material has steel rods encased inside of concrete walls and support beams.

Explanation:
A building could be made up of incombustible material, such as steel,
which provides a higher level of fire protection than the previously mentioned
materials, but loses its strength under extreme temperatures, something that may
cause the building to collapse. So, although the steel will not burn, it may melt
and weaken. If a building consists of fire-resistant material, the construction
material is fire-retardant and has steel rods encased inside of concrete walls and
support beams. This provides the most protection against fire and forced entry
attempts.