A It first gained vineyards only in the 1990s B It was founded as a wine region after the year 2000 C It has never grown wine grapes on any real scale D It is one of the state's oldest grape-growing areas

A As larger, more rural and more relaxed B As smaller, more built-up and more formal C As an urban region with no vineyards or farming D As identical to Napa in size and atmosphere

A A high proportion of family-owned wineries B That nearly all wineries are owned by the state C That wineries are almost always run by one big group D That the region has no small wine producers at all

A It is banned under local rules across the whole county B It is negligible, as the county rarely sees visitors C It is important, with towns such as Healdsburg and Sonoma D It is limited to one village for a short season only

A Many wine styles, from cool to warm areas B Exclusively sweet dessert wines everywhere C Only a single wine style across the whole county D No wines at all, just other farmland

A A big city outside the county in another state B The historic town of Sonoma with its central plaza C A deserted mountain peak with no settlement at all D A modern port city built long after the year 2000