Last year, the price per transaction of certain company increases P percent from the year before, and the number of transactions increase N percent from the year before. Total revenue is simply the number of transactions times the price per transaction. Assume this one transaction is this company's only source of revenue. Which of the following is the percent increase in revenue last year, from the year before?

A:P*N%

B:(P+N)%

C:$$(P+N+{{P*N}\over{100}})$$%

D:$$(P+N-{{P*N}\over{100}})$$%

E:$$(P+N+{({P*N})^{2}\over{10000}})$$%