Which equation correctly represents the steady flow process where enthalpy, work and heatare in kJ/kg, velocity is in m/s and gravitational acceleration is in m/s$$^2$$?

$$h_1 + \frac{c_1^2}{2} + gz_1 + \frac{dQ}{dm} = h_2 + \frac{c_2^2}{2} + gz_2 + \frac{dW}{dm}$$

$$h_1 + \frac{c_1^2}{2} + gz_1 - \frac{dQ}{dm} = h_2 + \frac{c_2^2}{2} + gz_2 - \frac{dW}{dm}$$

$$h_1 + \frac{c_1^2}{2000} +\frac{gz_1}{1000} + \frac{dQ}{dm} = h_2 + \frac{c_2^2}{2000} + \frac{gz_2}{1000} + \frac{dW}{dm}$$

$$h_1 + \frac{c_1^2}{2000} +\frac{gz_1}{1000} - \frac{dQ}{dm} = h_2 + \frac{c_2^2}{2000} + \frac{gz_2}{1000} - \frac{dW}{dm}$$