A Major Difference Between Meta-Analysis and Meta-Synthesis Is That

A major difference between meta-analysis and meta-synthesis is that

A) the goal of meta-analysis is to make precise estimates of the effect of an independent variable, whereas the goal of meta-synthesis is to identify broad themes that characterize the process being studied.
B) meta-analysis takes a systematic approach to integrating the results of studies, whereas meta-synthesis takes a subjective approach.
C) researchers who use meta-analysis are transparent about their methods and the decisions they make, researchers who use meta-synthesis see no need for such transparency.
D) all of the above.