From 2003 to 2007, the gap between Circuit City and Best Buy EBITDAR margins Group of answer choices narrowed as Circuit City improved gross margins narrowed as Best Buy reduced its SG&A expense as a percentage of sales was little changed as small improvements in Circuit City gross margins were mostly offset by changes in Best Buy SG&A. was little changed as small improvements in Circuit City SG&A were mostly offset by changes in Best Buy gross margins. widened as Circuit City improved gross margins widened as Best Buy reduced its SG&A expense as a percentage of sales