How are BGP routes calculated?

A. The number of hops to the destination network
B. The bandwidth to the destination network
C. The shorted AS path to the destination network
D. The most reliable path to the destination network

C. BGP uses the entire database of entries to calculate the entire autonomous system path to the destination. Then it routes the packet to the next router, which performs the same calculation using the shortest AS path or the least number of ASs the packet must traverse.