What is the most logical reason why Native Americans followed Quanah Parker and Isa-Tai?

a) Quanah Parker and Isa-tai promised them extensive land treaties
b) Native Americans feared the government, and thought these men could protect them.
c) Native Americans hoped and believed Quanah Parker and Isa-tai could lead a successful escape.
d) Native Americans were threatened with punishment if they did not follow suit.