DS0-001 Data Querying And Analysis — All Questions With Answers

A junior data analyst runs the following query against a retail sales table and receives 42,000 rows instead of the expected 12,000:

SELECT c.customer_id, c.customer_name, o.order_id FROM customers c LEFT JOIN orders o ON c.customer_id = o.customer_id WHERE o.order_status <> 'cancelled';

Which action should the analyst take to return all customers, including those with no orders, while still excluding cancelled orders?