Which of the
following firms would be expected to have a high ROE?
选项：

A:a medical supply company that provides very precise instruments at high price to large medical establishments such as hospitals
B:high-end fashion retailer that has very high mark-up on all
items it sells
C:brokerage firm that has high levels of leverage
D:a grocery store chain that has very high turnover, selling many
multiples of its assets per year