Mattie Wannamaker, owner of Wannamaker's, a small retail store, has been calculating ratios for her business. She knows that her company's average collection period ratio (days' sales outstanding) is 39 days days' inventory outstanding is 85 days, and average payable period ratio (days' payables outstanding) is 32 days. Wannamaker's cash conversion cycle is: A. 156 days B. 92 days C. 124 days D. 117 days E. 46 days