[单选题]
The electron in the z2)52v um/8aqya2ht*dtuj 81 oos a habr::l(d7 sj vnground state of a hydrogen atom absorbs a certain amount of energy. The diagram shv lj(ns7b :r:dows some of the energy levels of the hydrogen atom. At which state would the electron be if it absorbs 12.09 eV of energy?
A. At ground state.
B. First excited state.
C. Second excited state.
D. Third excited state.
