Put the following events of the yeast mating pathway in chronological order.
A. Replacement of GDP by GTP in CDC42
B. Polarized growth (shmoo formation)
C. Dissociation of G protein βγ subunits (STE4/STE18) from α subunit
D. Regulation of actin cytoskeleton
E. Cell fusion
F. Binding of mating factor to G-protein-coupled receptor