For a built-up column with lacing, what percentage of the axial load is considered as the transverse shear force (Vt) that the lacing system must resist?

Correct option is B

For a built-up column with lacing, the lacing system is designed to resist a transverse shear force (Vt) equal to 2.5% of the axial load, as per standard steel design practice (IS 800).