What is the criteria to decide the clear distance between two channel sections in a build up column?

The length and width of the built up section should be same.

The moment of inertia about minor axis should be 5 times the moment of inertia about major axis.

The moment of inertia about major axis should be 5 times the moment of inertia about minor axis.

The moment of inertia about major and minor axis should be same.

What is the criteria to decide the clear distance between two channel

1.	What is the criteria to decide the clear distance between two channel sections in a build up column?
A.	The moment of inertia about minor axis should be 5 times the moment of inertia about major axis.
B.	The moment of inertia about major axis should be 5 times the moment of inertia about minor axis.
C.	The moment of inertia about major and minor axis should be same.
D.	The length and width of the built up section should be same.
Answer» D. The length and width of the built up section should be same.