A florist is making blue and white flower arrangements. He has 24 blue carnations and 36 red carnations. Each arrangement has the same number of blue carnations and the same number of red carnations. He uses all the flowers to make the greatest number of matching arrangements. There should be __ total arrangements. ( 2, 4, 6, 12 )

He should include __ blue carnations in each arrangement. ( 2, 4, 6, 12 )

He should include __ red carnations in each arrangement. ( 2, 3, 4, 6 )