A financial analyst for Simon Manufacturing prepared the following report: Customers A B C Customer - Level Operating Income $5,842.00 $4,232.00 $3,054.00 $1,162.50 $984.80 $844.80 $336.60 $252.001 Customer Revenue $26,250 $30,000 $15,000 $7,300 $5,100 $4,400 $1,800 $4.5001 D E F G H F G H $844.80 $336.60 $252.00 ($168.00) ($676.00) $4,400 $1,800 $4,500 $2,400 $2,600 J What is the cumulative customer - level operating income as a percentage of customer level operating income for the top 4 most profitable (operating income) customers? A. 18.2% B. 90.1% C. 85.5% D. 79.1%