Answer:
A = Metallic Bond
B = Strong bonding, strong conductor, high melting and boiling points
Step-by-step explanation:
Since the bond is between two metals (located in groups 11 and 12), they would experience metallic bonding. Metallically bonded molecules have high melting and boiling points due to the strength of the metallic bond. They also experience strong electrical current due to the there delocalized electrons.