Help! Please help me solve this word problem:

Scott has:

American - 316,000
United - 120,000

Bruce has:

American - 120,000

Bruce and Scott travel together always.
Scott and Bruce are going on a trip using 2 50000 awards.
Scott and Bruce both accumlate miles on American through credit card purchase. Almost no miles are accumulated on United. Scott and Bruce do not accumulate miles by flying and do not fly frequently

Question - which is better, A or B:

A: Use Scott's United miles thus leaving enough on American for each person to get a 100,000 mile award and travel together and still have 200,000 left in Scott's AA account

B: Use Bruce's American miles thus leaving enough miles on United and American for future travel to cities not served by American.

I'm inclined to go with A since I do not anticipate accumulating any significant number of United miles in the future. Opinions?
thanks
Scott