That choice is an illusion created by hindi movies.A doctor will never ask you to make a decision, if he can only save one person.He is legally and morally bound to save the mother.Even if the husband asks for the baby to be saved,the doctor will not do so.Even if the mother asks for the baby to be saved,the doctor will still save her.This is one of the situations where a pateint does not have the right to a decision.