多选题 产品(PRODUCT)表的结构如下：

PRODUCT
PRODUCT_ID	NUMBER	NOT NULL, Primary Key
PRODUCT_NAME	VARCHAR2(25)
SUPPLIER_ID	NUMBER	Foreign key to SUPPLIER_ID of the SUPPLIER table
LIST_PRICE	NUMBER(7, 2)
COST	NUMBER(7, 2)
QTY_IN_STOCK	NUMBER
QTY_ON_ORDER	NUMBER
REORDER_LEVEL	NUMBER
REORDER_QTY	NUMBER

如果使用如下的SQL语句，哪个子句将会产生错误?
SELECT supplier_id，AVG(cost)
FROM product
WHERE AVG(list_price)＞60.00
GROUP BY supplier_id
ORDER BY AVG(cost)DESC;