What configuration guarantees a level of Frame Relay service of 512K but reports a guaranteed service of 1024K in LMI?

A.
CIR=1024K, QIR=512K, MIR=512K, PIR=512K, percent utilization = 50%

B.
CIR=512K, QIR=1024K, MIR=1024K, PIR=2048K, percent utilization = 50%

C.
CIR=1024K, QIR=1024K, MIR=512K, PIR=2048K, percent utilization = 100%

D.
CIR=512K, QIR=512K, MIR=1024K, PIR=512K, percent utilization = 100%

Explanation:
The IGX guarantees service based on MIR, so in order to guarantee 512K, you need MIR x %util to = 512K
Reference:
http://www.cisco.com/en/US/products/hw/switches/ps525/products_technical_reference_chapter09186a00800d