小明同学做下列化学实验，在他实验报告的数据中，你认为错误的是[ ]

A．用pH试纸测得某盐酸溶液的pH=5.4

B．用10mL的量筒量取某溶液，体积V=8.2mL

C．用托盘天平称量食盐，其质量m=3.4g

D．用温度计测得氢氧化钠固体溶于水后所得溶液的温度为40.2℃

— It's eight o'clock already. Jack _____ be here by now.

— Oh, he told me that he was going to see his dentist and wouldn't be back until ten. [ ]

A. must

B. can

C. should

D. need