user: Question: What class has a MHZ frequency under 103.1 licensed in Morro Bay, California?
Columns: ['Call sign', 'Frequency MHz', 'City of license', 'ERP W', 'Class', 'FCC info']
Types: ['text', 'real', 'text', 'real', 'text', 'text']
Sample row: ['K206CC', 89.1, 'Lockwood, California', 10.0, 'D', 'FCC']
SQL:

assistant: SELECT "Class" FROM "Table" WHERE "Frequency MHz" < 103.1 AND "City of license" = 'Morro Bay, California';