$129(\sqrt{3} x+\sqrt[3]{2})^{100}$ In the expansion, the number of terms with rational coefficients is
A. 50 terms
B. 17 terms
C. 16 terms
D. 15 terms
129 B. $(\sqrt{3})^{100-k}(\sqrt[3]{2})^{k}$ is a rational number, it must be $k=6 h, h=0,1, \cdots, 16$.