help asap please!!

Edison clearly has better profitability ratios. What could Thomas do in the next six months to improve its profitability ratios? Select one: a. Buy back more of its own stock. b. Increase the allowance for doubtful accounts for accounts past due 120 days. c. Start purchasing inventory from a local supplier, eliminating shipping costs. d. A and B e. B and C f. A and C g. A, B, and C