A person wears glasses of power -2.5D. Tell whether the person is long-sighted or near-sighted and find the far point of the person without glasses

A person wears glasses of power -2.5D. Tell whether the person is long

1.	A person wears glasses of power -2.5D. Tell whether the person is long-sighted or near-sighted and find the far point of the person without glasses
A.	near-sighted, -20 cm
B.	long-sighted, -20 cm
C.	near-sighted, -40 cm
D.	long-sighted, -40 cm
Answer» D. long-sighted, -40 cm