In Translating and Adapting a Test for Use in a Second

In translating and adapting a test for use in a second language,back translation refers to:

A) Translation of the items into the second language, then translation back into the first language by a differed translator and comparison of the two versions.
B) conducting pilot testing of the translated measure to ensure it is comprehensible.
C) re-standardizing scores on the measure using norms specific to the translated measure.
D) establishing construct validity between the two version to determine whether the instruments measure the same psychological qualities in both languages.