[单选题]
The electron in the m:ciw xj4or1se)e/+ b7/ dq 0-yzco pwgrot4j1y(a xgvlw8 ul(msim vn(- 3 .h*t+ij3htcund state of a hydrogen atom absorbs a certain amount of energy. The diagram shows some of the energy levels of the hydrogen atom. At which state would the electron be if it absorbs 1u(amt+.*h l3- 3tln i(c (v wyxtj8si1v4jg hm2.09 eV of energy?
A. At ground state.
B. First excited state.
C. Second excited state.
D. Third excited state.
