某硬磁盘存储器转速为[tex=20.143x1.286]QSrh+6WfJ9bAeESRYgmWtmetwQDQ9UFwiqpI/hUl+shVQb/OQvHM5DxrScZz7Z1FzrHc5xFnA/KUUkcabYj7iQ==[/tex]，每道可记录[tex=14.5x1.286]t16UfUqq9II2j+gvlt84YDiGBNBIy7SpR7P+egT15GGB4TZrHGobyHlnL9BTKYLb[/tex]，磁盘存储区域的内径为[tex=13.857x1.286]y/bBOiuDcTkwjp1sz76xZgtZht94MzMeRfpD/Yp93M9zCVGlfgrlsQ5tCXqFdQEw[/tex]。试求该硬磁盘存储器的：平均等待时间

If a customer visiting a departmental store cannot find his desired soap manufactured by Hindustan Unilever Ltd (HUL) in the store, which of the following chain partner will he hold responsible for the non-availability of the soap? A: The suppliers of raw materials and components B: The distributor C: The logistics service provider D: Hindustan Unilever Ltd E: The departmental store