What is to be the MINIMUM size of the TR?

The ICT distribution designer is hired to design a Telecommunications Room on the third floor of a building. The size of the floor is 20 m by 26 m (92 x 85 It).

What is to be the MINIMUM size of the TR?
A . Shallow Room, no minimum room size
B . =3 m (10 ft) by = 2.40 m (8 ft)
C . =3 m (10 ft) by =2.74 m (9 ft)
D . =3 m (10 ft) by =3.40 m (11 ft)

Answer: B