According to the book of Hebrews, what is the significance of Melchizedek's priesthood in relation to the priesthood of Jesus?

A Melchizedek's priesthood was a temporary foreshadowing of the Levitical priesthood, which Jesus fulfilled. B Melchizedek's priesthood was inferior to the Levitical priesthood, but Jesus perfected it. C Jesus' priesthood is of a higher order, similar to Melchizedek's, being eternal and not based on lineage. D Melchizedek's priesthood was established after Jesus' ascension to heaven.