39 POINTS PLZZZZZz HELP ME) How does the subplot of the feud between the dwarves and goblins support the main plot in The Hobbit A it explains why Bilbo would use the Arkenstone to bargain with B it shows where Gandalf has been C it ties into the feud between the elves and the dwarves D it shows why the Goblins would be so eager to go to war at the Lonely Mountain in great numbers