Conventionally, the ultimate measure of a scientific work's validity is how broadly and confidently its conclusions become accepted in the relevant field, which in turn (i)____________ the extent to which its findings are replicated and extended. However, establishing such validity, especially for a novel experimental finding, can take years, and what (ii)____________ replication or extension may be (iii)____________ for some time. A. derives from B. justifies C. evident D. works against E. impugns F. disputed G. leads to H. constitutes I. touted