Choose the closest paraphrased version for the sentence or italicized part.
It would be a shallow kind of optimism to assume that the introduction of the art of inventing has been an immediate and unmixed blessing to mankind.（）
A.正确答案DIt would be a shallow kind of optimism to believe that the introduction of the art of inventing has directly benefited only mankind.
B.It would be a shallow kind of optimism to believe that the introduction of the art of inventing has benefited mankind directly.
C.It would be a shallow kind of optimism to think that the introduction of the art of inventing has blessed mankind immediately and blessed only mankind.
D.It would be a shallow kind of optimism to believe that the introduction of the art of inventing has benefited mankind immediately and brought them only benefit.
