Oil prices have risen by 32 percent since the start of the year, ____ a record US$57,65 a barrel on April 4. [ ]

A. have reached

B. reaching

C. to reach

D. to be reaching

对直接粘贴在冰冻血浆（制品表面不平整）袋上的标签，粘贴时制品不需擦拭，可直接粘贴，不能出现（）的现象。