A piece of metal of specific gravity 13.6 is placed in mercury of specific gravity 13.6, what fraction of it volume is under mercury ?

• A. the metal piece will simply float over the mercury
• B. the metal piece will be immersed in mercury by half
• C. whole of the metal piece will be immersed with its top surface just at mercury level
• D. metal piece will sink to the bottom
• E. none of the above