39. 請選出翻譯正確的句子：讓許多顧客很滿意的是這間公司提供良好的售後服務。
(A) Much to the customers' happiness, this company offers great selling-after service.
(B) To the clients' contentment, this company provides good product service.
(C) Much to many customers' satisfaction, this company provides good after-sales service.
(D) What makes many customers satisfied is that the company provides great after-sales service.
(E) Many customers are dissatisfied with the sales service the company offers.