[单选题]
A steel ball sinks in wateur- 6on -h:u (qqb0ykk/bwa w8r but drl)vs37- ccc6mcxp 9floats in a pool of mercury. Where is the buoyant force on the ball grelxcvmcpc 3)sd -769crater?
A. floating on the mercury
B. submerged in the water
C. It is the same in both cases.
D. cannot be determined from the information given
