What can a PPM deployment be? (Select two.)

A.
a single-machine architecture with one web server and one application server

B.
a two-machine architecture with one web server and one application server

C.
a load-balancing architecture of two servers, each with a web server and an application server

D.
a load-balancing architecture of two servers, one with a web server and an application server
and one with only an application server

E.
a high-availability architecture with four servers: two web servers and two application servers