An application publishes persistent stock quote messages every 5 seconds. The subscribers are only interested in the latest quotes. During the tests, it is found that the message delivery speed is slow. In order to improve the application performance, which of the following actions is appropriate?

A.
Set nonpersistent in MQMD.

B.
Implement MQ high availability.

C.
Increase the maximum message length.

D.
Reduce the number of stock quote subscribers.