Which is NOT correct about Blumenstock et al.'s study? Group of answer choices Blumenstock et al.'s study used both traditional survey and call records. The approach of Blumenstock et al.'s study was much faster than traditional survey research. The difference between Blumenstock et al.'s study and traditional social science research was that Blumenstock et al.'s study used only digital data to get the results. The goal of Blumenstock et al.'s research was to predict the wealth distribution in Rwanda