下列程序的功能是统计字符串中“array”的个数，在程序的空白处应填入的正确选项是（）。
publicclassFindKeyWords
publicstaticvoidmain(sring[]args)
stingtext=
“Anarrayisadatastructurthatstoresacollectionof”
+“valuesofthesametype.YOUaccesseachindividualvalue’’
+“throughanintegerindex.Forexample,ifaiSanarray”
+“of inergers，thena[i]iSthe ith integer in thearray.”；
In tarrayCount=0；
Intidex=-1；
Sting arrarStr=“array”；
IndeX=text.indexof(arrayStr)；
While(index______0)
++arrayCount；
Index+=arrayStr.length()；
IndeX=text.indexof(arrayStr,indeX)；

SyStem.out.phntln
(“thetextcontains”+arrayCount+“arrays”)；

A．＜

B．=

C．＜=

D．＞=

— What a pity! You ________ it down on your notebook.

— Oh, my god! I forgot his mobile phone number.[ ]

A. could have written

B. should have written

C. must have written

D. would have written