A data analyst wants to use the following tables to find all the customers who have not placed an order: Which of the following SQL statements is the best way to accomplish this task?

The `LEFT JOIN` from the `CUSTOMERS` table to the `PRODUCTS` table includes all customers, even those without a matching entry in the `PRODUCTS` table (representing orders). By adding `WHERE P.Customer_ID IS NULL` (assuming `P.Customer_ID` is the join column on the `PRODUCTS` side), the query specifically filters for customers who have no corresponding orders, thus identifying those who have not placed an order.

An `INNER JOIN` would only return customers who have placed an order (i.e., have matching entries in both tables), which is the opposite of the desired result. The join condition `C.ID = C.ID` is also incorrect.

Similar to choice B, an `INNER JOIN` only returns customers with orders. Additionally, starting the `LEFT JOIN` from `PRODUCTS` and then joining to `CUSTOMERS` would not correctly identify customers without orders.

A `LEFT JOIN` from the `PRODUCTS` table to `CUSTOMERS` would list all products and their associated customers, but it would not identify customers who have no orders; it would show products that might not have a customer or all products and their customers.