CREATE TABLE table_41020 ("City of license" TEXT, "Identifier" TEXT, "Frequency" TEXT, "Power" TEXT, "Class" TEXT, "RECNet" TEXT)

What is the power that belongs to Class A with an Identifier of CBOC-FM?
SELECT "Power" FROM table_41020 WHERE "Class" = 'a' AND "Identifier" = 'cboc-fm'
SELECT "Power" FROM "table_41020" WHERE "Class" = 'a' AND "Identifier" = 'cboc-fm'