text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE table_name_54 (frequency_mhz VARCHAR, erp_w VARCHAR, class VARCHAR, call_sign VARCHAR)
  ### Question:
  Name the total number of frequency Mhz with class of d and call sign of k201bm and ERP W less than 74
  ### Answer:
  SELECT COUNT(frequency_mhz) FROM table_name_54 WHERE class = "d" AND call_sign = "k201bm" AND erp_w < 74