Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_84 (erp_w VARCHAR, class VARCHAR, call_sign VARCHAR)

### Question ###
ERP W that has a Class of d, and a Call sign of k299ar is what total number?

### Accurate SQL ###

SELECT COUNT(erp_w) FROM table_name_84 WHERE class = "d" AND call_sign = "k299ar"