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        The modernization program for the steel mill will cost approximately 51 million dollars, which it is hoped can be completed in the late 1980’s.

(A) The modernization program for the steel mill will cost approximately 51 million dollars, which it is hoped can be completed in the late 1980’s.

(B) The modernization program for the steel mill, hopefully completed in the late 1980’s, will cost approximately 51 million dollars.

(C) Modernizing the steel mill, hopefully to be completed in the late 1980’s, will cost approximately 51 million dollars.

(D) The program for modernizing the steel mill, which can, it is hoped, be completed in the late 1980’s and cost approximately 51 million dollars.（E）

(E) Modernizing the steel mill, a program that can, it is hoped, be completed in the late 1980’s, will cost approximately 51 million dollars.

请问大侠，如何排除其他项的，特别是C。谢谢