題目:某產(chǎn)品的合格率為90%,現(xiàn)隨機(jī)抽取5件該產(chǎn)品進(jìn)行檢查,則全部為合格品的概率為:A. 0.59049 B. 0.6561 C. 0.81 D. 0.9