How were the achievements of Natan Sharansky similar to those of Nelson Mandela?

A. Both received Western education and exposure to equality that they promoted back in their home countries.

B. Both used their political influence in their home country to advance the rights of minorities.

C. Both responded to unjust imprisonment by gaining political power and representing mistreated people.

D. Both led successful revolts against authoritarian governments to spread democracy in their homeland.