[单选题]
The near point of a fa3zn;5rh n2k;gc: scmx 4n2 wvzrs6r4u.qeir v(d ighted person is 100 cm. She places reading glasses close tqe.r 4d6ivr u(o her eyes, and with them she can comfortably read a newspaper at a distance of 25 cm. What lens power is required?
