As an electron makes a transition from an excited state to the ground state of a hydrogen - like atom /ion:

Question

$\begin{array}{1 1} \text{kinetic energy and total energy decreases but potential energy increases } \\\text{its kinetic energy increases but potential energy and total energy decreases } \\ \text{kinetic energy , potential energy and total energy decrease} \\ \text{kinetic energy decreases , potential energy increases but total energy remains same } \end{array} $