Three of the following statements are fused sentences. Choose the one correctly punctuated statement that is not a fused sentence.

a) The World Wide Web was invented in 1990 subsequently the web made the internet much more popular.

b) The World Wide Web was invented in 1990 it made the internet much more popular.

c) The World Wide Web was invented in 1990. It made the internet much more popular.

d) The World Wide Web was invented in 1990 then it made the internet much more popular.