While a voice gateway accesses webservices elements, it times out and throws an error.badfetch event. Which two options are common ways to reduce such errors?

While a voice gateway accesses webservices elements, it times out and throws an error.badfetch event. Which two options are common ways to reduce such errors? (Choose two.)
A. Set FetchAudioDelay timeout.
B. Set FetchAudioMinimum timeout.
C. Set mediafetchDelay timeout.
D. Set mediafetchDelay.