Saffron and Serge have a mobile home in which they travel from city to city, town to town, selling pottery and playing music. One week they may be in Berkeley, the next Sacramento. The couple travel wherever their mobile home will take them. Which of the following is true?A. By the definition of the California Health and Safety Code, this couple's 'mobile home' is not, in fact, a mobile home. B. The mobile home can be sold by a real estate licensee as real property, since it constitutes a dwelling unit. C. To become real property, their mobile home must have a permanent foundation. D. Saffron and Serge cannot legally occupy the mobile home without a Certificate of Occupancy.