The Iron Pillar of Delhi was built during the reign of the Gupta emperors. It was created by skilled craftsmen and has rusted very
little. What does the pillar show about the accomplishments of the Gupta?
A.
They often made metal objects for religious purposes.
B.
They had knowledge of advanced techniques in metallurgy.
C.
They borrowed techniques in metallurgy from their neighbors.
D. They preferred working in stone instead of metal.