[单选题]
The electron in the grozpp 2(s48 2kip zxycx6u lt yr34/ 6;czi+ggq7lhf l6xond state of a hydrogen atom absorbs a certain amount of energy. The diagra74l6;rqlch+3tlfogx iz /yg6m shows 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.
