Rajesh is considering whether to use a web app to collaborate with a group of friends on a project. What is one reason he should avoid using a web app tor

A$.$ His friends must be in the same location to use the web app.

B$.$ He must store many copies of the group's documents on his hard drive.

C$.$ One friend has an unreliable, slow Internet connection.

D$.$ He wants to access the web app anytime and from anywhere.