[单选题]
The binding energy of the hydrogen atsh:cxx2kwoc; 7.9md 1tvqu: u om in its ground state is -13.6 eV. ) v)oqp8b(pv ,vt jmj0g-71tn tvvh+ e What is the energy when it is in the )jv- 1btvqtvje) o ,g 78vp+hnt(0pmvn = 5 state?
A. $2.72 \; eV$
B. $-2.72 \; eV$
C. $0.544 \; eV$
D. $-0.544 \; eV$