How does the concept of 'fulfillment' in Matthew's Gospel, particularly in relation to Old Testament prophecies, contribute to his portrayal of Jesus as the Messiah?

A It primarily serves to demonstrate Jesus's adherence to Jewish law, emphasizing his lineage. B It functions as a literary device to connect Jesus's life events with established expectations, reinforcing his Messianic identity to a Jewish audience. C It highlights Jesus's rejection of the Old Testament covenants, establishing a completely new religious framework. D It aims to prove Jesus's miraculous powers and ability to control events, rather than his Messianic role.