A ball is made of a material of density ${\rm{\rho }}$ where ${\rho _{{\rm{oil}}}}{\mkern 1mu}  < \rho {\mkern 1mu}  < {\rho _{{\rm{water}}}}{\mkern 1mu} {\mkern 1mu} {\rm{with}}\,\,\,\,{\rho _{{\rm{oil}}}}\,\,\,{\rm{and}}\,\,\,{\rho _{{\rm{water}}}}$  respectively. The oil and water are immiscible. If the above ball is in equilibrium in mixture of this oil and water, which of the following pictures represents its equilibrium position?