71. Identiiy the C3 epimer of tiie sugar on the rigit drawn in its open chain (acyclic)
Fischer projection.

(A)
(B)
(C)
(D)
(E)
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統計: A(5), B(6), C(1), D(0), E(0) #3222838
統計: A(5), B(6), C(1), D(0), E(0) #3222838