Assume we are running variable elimination, and we currently have the following three

factors:

The next step in the variable elimination is to eliminate B$.$

a$.$ Which factors will participate in the elimination process of B$?$

b$.$ Perform the join over the factors that participate in the elimination of B$.$ Your answer should be a table similar to the tables above, it is your job to figure out which variables participate and what the numerical entries are.

c$.$Now perform the summation over B for the factor you obtained from the join and show the factor that results.