27. What would be the correct order of adding reagents (i)~(v), for the formation of the desired
product?

(A)v→ii→iv→i→ii
(B)v→iv→i→ii→ii
(C)v→i→iii→iv>ii
(D)v→i→ii→iii→iv
(E)i→iii →iv→v→ii
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統計: A(0), B(0), C(1), D(0), E(0) #3224481
統計: A(0), B(0), C(1), D(0), E(0) #3224481