CREATE TABLE table_name_59 (erp_w INT, call_sign VARCHAR, frequency_mhz VARCHAR)

What is the ERP W for the station whose call sign is K248BJ and whose frequency MHz is higher than 97.5?
SELECT AVG(erp_w) FROM table_name_59 WHERE call_sign = "k248bj" AND frequency_mhz > 97.5
SELECT AVG("erp_w") FROM "table_name_59" WHERE "call_sign" = "k248bj" AND "frequency_mhz" > 97.5