In Which of the Following Types of Industries Would Kerr

In which of the following types of industries would Kerr and Siegel predict high strike rates, according to their "isolation hypothesis?"

A) Industries where social isolation keeps workers uninformed about the larger world.
B) Industries where social isolation and limited occupational hierarchies lead to cohesive work groups.
C) Industries where workers are isolated from social values encouraging consensus instead of conflict.
D) Industries that are isolated from labour laws and arbitration procedures designed to avoid conflict.