What’s the usage/meaning of the word “as” in the sentence “It’s the low prices on offer which mean that everyone else also has to cut their prices and profit margins, as in this more recent competition with Amazon.”?
选项：

A:used to describe the fact that sb/sth has a particular job or function
B:used to state the reason for sth
C:used to make a comment or to add information about what you have just said
D:used to say that in spite of sth being true, what follows is also true