C     They have high profit margin.

29    Martha's advice to anyone who is starting a new business is to

        A     look for an area with few competitors.

        B     keep yourself well informed about competitors.

        C     try to offer lower prices than your competitors.

30    What surprises Martha about other companies?

        A     They don’t monitor their competitors' activities.

        B     They are unaware of their own weaknesses.

        C     They don’t act on the information they have.