Two small spheres, \(A\) and \(B\), each of mass \(m\), are suspended from a ceiling by light insulating strings of equal length attached to a common point. Sphere \(A\) carries a charge of \(+q\), and sphere \(B\) carries a charge of \(+3q\). The spheres repel each other and come to rest in electrostatic equilibrium. Which of the following correctly compares the tensions \(T_A\) and \(T_B\) in the strings supporting spheres \(A\) and \(B\), respectively, and provides a correct justification?