A university requires a significant increase in web and database server resources for one week, twice a year, to handle student registration. The web servers remain idle for the rest of the year. Which of the following is the MOST cost effective way for the university to securely handle student registration?
A . Virtualize the web servers locally to add capacity during registration.
B . Move the database servers to an elastic private cloud while keeping the web servers local.
C . Move the database servers and web servers to an elastic private cloud.
D . Move the web servers to an elastic public cloud while keeping the database servers local.
Answer: D