Otto von Bismarck (Germany) and Count Camillo di Cavour (Italy) both used the Realpolitik approach to unifying their countries. What is the BEST definition of Realpolitik?

Responses
A adopting the ideas of Karl Marxadopting the ideas of Karl Marx
B using any means to get and hold powerusing any means to get and hold power
C achieving power through parliamentary electionsachieving power through parliamentary elections
D using the support of the peasants to gain controlusing the support of the peasants to gain control

B using any means to get and hold power