For People Who Are Blind, What Typically Happens to Their

For people who are blind, what typically happens to their tactile acuity as they get older?

A) It decreases steadily as they age, starting in their 20s.
B) It stays the same until their 70s, and then decreases rapidly.
C) It stays the same for their entire life span.
D) It improves steadily as they age, starting in their 20s.
E) It stays the same until their 70s, and then improves rapidly.