Do you think that any of the following marriages could be annulled on the ground of duress?

a. Rita married Dan after Dan threatened to kill Rita’s second cousin if she did not marry him. The only reason Rita married Dan was to save her cousin’s life.

b. Tom married Edna after Tom’s very domineering father ordered him to marry her. Tom had been in ill health lately. Tom married Edna solely because he has never been able to say no to his father.

c. Paula married Charles after Paula’s mother threatened suicide if Paula would not marry him. Paula married Charles solely to prevent this suicide.