Which of the Following SQL Queries Counts the Number of Occurrences

Multiple Choice

Which of the following SQL queries counts the number of occurrences for each value of the field order_type in the table orders?

A) SELECT order_type,COUNT(*) FROM orders WHERE order_type=order_type;
B) SELECT order_type,COUNT(*) FROM orders GROUP BY order_type;
C) COUNT(SELECT order_type FROM orders) ;
D) SELECT COUNT(*) FROM orders ORDER BY order_type;
E) SELECT AUTO_COUNT FROM orders COUNT order_type;