狭义地讲,下列哪组（ ）属于“服务”而不属于“产品” In a narrow sense, which of the following can be called as a "service" rather than a "product"（ ）
A、衣物干洗 Cleaning of clothes
B、洗衣机 Washing machine
C、衣物 Cloth
D、理发用具 Hairdressing utensils