A.Astorecanonlyhaveonesalescatalog.
B.Asalescatalogisusedtobundlesimilarproducts.
C.Asalescatalogmaybeusedtoplaceaproductinmorethanonecategory.
D.Everystoremusthaveasalescatalog.
参考答案：C
AAstorecanonlyhaveonesalescatalogBAsalescatalogisusedtobu
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