Isabelle is mixing red paint with blue to make purple. She adds 3/10 of a fluid ounce of red to 11/15 ounce of blue to make 1 1/30 fluid ounces of purple. How many fluid ounces of red paint will she need to make 3 fluid ounces of purple paint? A. 2/5 fluid ounce
B. 11/20 fluid ounce
C. 27/31 fluid ounce
D. 1 13/50 fluid ounce