When the engineer configured the conference profile on the router, the following message is received. Vr-2911-east(config)#dspfarm profile 10 conferenceDspfarm 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?

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 conferenceDspfarm 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 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