A control valve with hyperbolic characteristics has a turndown ratio (ratio of maximum flow to minimum controllable flow) of 50. The flow rate through the valve at 70% open is 5 \(\text{m}^3\,\text{s}^{-1}\). Assuming constant fluid density and pressure drop across the valve, which one of the following is the flow rate (in \(\text{m}^3\,\text{s}^{-1}\)) through the valve at 30% open?