Nelson Mandela realsed from the priosn in__________?

A. 1988
B. 1989
C. 1990
D. 1991

Mandela served 27 years in prison, split between Robben Island, Pollsmoor Prison and Victor Verster Prison. Amid growing domestic and international pressure, and with fears of a racial civil war, President F. W. de Klerk released him in 1990.