Why is it recommended to establish a service-oriented architectural model that is vendor-neutral? | SOA

A. Because a vendor-neutral architectural model provides you with the opportunity to fully leverage and form dependencies on proprietary (vendor-specific) vendor features.
B. Because a vendor-neutral architectural model provides you with the opportunity to build service-oriented solutions only with open source technologies, thereby avoiding the use of vendor technologies altogether.
C. Because a vendor-neutral architectural model provides you with the freedom to diversify its implementation by leveraging multiple vendor technologies as required.
D. A vendor-neutral service-oriented architectural model is not recommended.

Ans:  C