The reversible reaction between diatomic gases \(\text{X}_2(g)\) and \(\text{Y}_2(g)\) is represented by the equation below.

\[\text{X}_2(g) + \text{Y}_2(g) \rightleftharpoons 2\,\text{XY}(g) \quad K_c = 4.0\]

A mixture of \(\text{X}_2(g)\), \(\text{Y}_2(g)\), and \(\text{XY}(g)\) is contained in a rigid vessel of fixed volume at constant temperature, as represented in the particulate diagram. Which of the following statements best explains whether the system is at equilibrium?