An engineer is configuring a new conference resource on a Cisco 2911 ISR router. The router has a single PVDM3-32 and one PRI with 23 voice channels. When the engineer configured the conference profile on the router, the following message is received.
Vr-2911-east(config)#dspfarm profile 10 conference Dspfarm profile 10:: No resource, check voice card or dspfarm service is not configured

Which configuration should the engineer add before adding the conference bridge profile?

A.	voice-card 0 dsp services dspfarm
B.	voice-card 0 codec complexity medium dsp services dspfarm
C.	voice-card 0 codec complexity flex dsp services dspfarm
D.	voice-card 0 dsp tdm pooling dspfarm