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Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information. A. While stonewares and porcelains are found throughout most historical periods, religious sculpture is limited to the ancient period. B. Religious sculpture was created in most periods, but its history is less clear than that of stonewares or porcelains because some old forms continued to be used even when new ones were developed. C. While stonewares and porcelains changed throughout history, religious sculpture remained uniform in form and use. D. The historical development of religious sculpture is relatively unclear because religious sculptures sometimes resemble earthenware architectural ornaments.