Eukaryotic Organisms Solve the Problem of Time Constraints on Replication

Eukaryotic organisms solve the problem of time constraints on replication of DNA by

A) elimination of the initiation phase,thus shorten the length of the replication process.
B) producing several sliding clamp complexes that allow DNA pol III enzymes more binding sites.
C) allowing DNA gyrase to unravel the double helix faster than the DNA helicase,which then speeds up the formation of the replication folk.
D) using multiple origins of the replication on each chromosome,which results in multiple replicons.