An IT architect of a medium$-$sized e$-$commerce business that operates $\frac{24}{7}$ is planning to enhance the system's resilience and recovery capabilities. As part of this, the architect is considering a clustering solution for the servers, with the key objective being high availability and seamless customer experience, even in the event of unexpected server failures. Which type of clustering setup would BEST meet the needs of this e$-$commerce business?

A$.$ Active$/$Active Clustering

B$.$ Active$/$Passive Clustering

C$.$ No clustering, just a single server

D$.$ Active$/$Passive Clustering with an equal number of active and passive nodes