How is the IBM Z architecture better equipped than the x86 architecture to address this specific issue?

A client is concerned about their x86 database I/O response time. Further analysis reveals significant I/O wait delay.

How is the IBM Z architecture better equipped than the x86 architecture to address this specific issue?
A . It leverages the VRIO (Vector I/O) to control I/O wait.
B . It leverages the I/O subsystem to manager I/O wait.
C . It leverages the VIO (Virtual I/O) to eliminate I/O wait.
D . It leverages zIIP processors to speed-up I/O wait.

Answer: C