问题
Which of the following would be the subject of the text？ 查看材料
A:A looming threat to business-method patents.
B:Protection for business-method patent holders.
C:A legal case regarding business-method patents.
D:A prevailing trend against business-method patents.
B:Protection for business-method patent holders.
C:A legal case regarding business-method patents.
D:A prevailing trend against business-method patents.
正确答案是：
