Mulpiple choice

You want them to be able to choose up to 3 answers? or You want them to choose only 3 answers?or You want them to be able to choose more than 1 answer?If you want them to choose more than 1 answer but not limit how many they can choose, do the following:** In 2006 version, check correct answer requires more than one choice.I do not know how to limit the number of choices they can make.