Which of the following statements about the Civil War is FALSE?

a.

Some Texans who opposed the war fled to Mexico and the northern frontier.

b.

Some Texans who opposed the war were executed for stating their opinions and beliefs.

c.

Some Texans who opposed the war returned to Union states that they emigrated from.

d.

Some Texans who opposed the war ambushed war efforts by serving as drummers and buglers.

What do you think? I need help :>