50. According to the passage, which of the following features can be applied to all or some of
the restaurants that don’t take reservations?
① bargain prices ② concierges in tow ③ customers’ recommendation ④ exotic cuisines⑤hospitality ⑥ rank-consciousness ⑦ star chef
(A) ③④⑤⑦
(B) ①③⑥⑦
(C)②④⑥⑦
(D)③④⑦