Finance should use version B! Tongji's Advanced Mathematics is divided into three kinds of textbooks, A, B and C, which are set according to professional requirements. Anyway, the A version of advanced mathematics in our school is only available for majors like Mathematics Department of Science College, which is super difficult, and then the B version is generally difficult. Most majors use version B, and those textbooks sold outside the school are also version B, and version C is the simplest, which is liberal arts or art. The textbooks you buy outside are all version B textbooks, which are not marked. You just need to look at the green cover.