Tidewater City Bank has four branches with the following inputs and outputs:

input 1 = teller hours 1100s2 input 2 = space 1100s ft.22 input 3 = expenses 1$1,000s2 output 1 = deposits, withdrawals, and checks processed 11,000s2 output 2 = loan applications output 3 = new accounts 1100s2 The monthly output and input values for each bank are as follows:
Outputs Inputs Bank 1 2 3 1 2 3 A 76 125 12 16 22 12 B 82 105 8 12 19 10 C 69 98 9 17 26 16 D 72 117 14 14 18 14 Using data envelopment analysis (DEA), determine which banks, if any, are inefficient. LO.1