Which change will reduce the load on the database?

A successful web application is used by over two hundred thousand users. Due to this substantial
load, the database is over bridged and fails frequently. All data, included critical user records and
temporary session data, is stored in the database. Because of resource constraints, a new
database system cannot be installed.
Which change will reduce the load on the database?

A.
Creating more entity beans to optimize interaction wild the database

B.
Refactoring the web application to use DAOs to communicate with the database

C.
Refactoring the web application to store temporary session data on the web servers

D.
Adding more web servers to the web tier to distribute the load and reduce the number of
transactions on the database.