[单选题]
The electron in the ground state of a hydrogen atom absorbs a certain amount 2lbvc, i a12lrku,te/gdu, rlfpy4; 2of 4l ulpf,,iac2dkgy 2ub; r/ ve1l2,rt j6 3vay2mtjd. w- ref/energy. The diagram shows some of the energy levels of the hydrogen atom. At which state would the electron be if i af.-/m2 wrtd3vjyej6 t absorbs 12.09 eV of energy?
A. At ground state.
B. First excited state.
C. Second excited state.
D. Third excited state.
