Which of these conditions satisfy realizability?

• A. \(-\rho \overline{u_{i}^{‘} u_{j}^{‘}}\)<1
• B. \(-\rho \overline{u_{i}^{‘} u_{j}^{‘}}\)>1
• C. \(-\rho \overline{u_{i}^{‘} u_{j}^{‘}}\)>0
• D. \(-\rho \overline{u_{i}^{‘} u_{j}^{‘}}\)<0