Which of the following deployment scenarios will be most suitable for a customer that requires full telephony feature transparency, requires high availability and has two sites with 3000 IP phones connected via a low-delay connection?

Which of the following deployment scenarios will be most suitable for a customer that requires full telephony feature transparency, requires high availability and has two sites with 3000 IP phones connected via a low-delay connection?
A. Intermedia engine solution
B. Multisite WAN with centralized call processing
Real 15
Cisco 700-037 Exam
C. Multisite WAN with distributed call processing
D. Clustering over the IP WAN