小明用托盘天平称一块橡皮的质量，正确使用天平时称得橡皮质量为m₁。若在托盘天平未调平衡，指针还偏在分度盘中央的右边就去称量，称得橡皮质量为m₂。则m₁ 和m₂的大小关系是： [ ]

A．m₁ ＞m₂　

B．m₁ ＜m₂　

C．m₁ ＝m₂　　

D．无法确定

— Do you know where David is? I couldn't find him anywhere.

— Well. He _____ have gone far-he told me he would come back in 5 minutes. [ ]

A. shouldn't

B. mustn't

C. can't

D. wouldn't