An Fl has $6 million in cash reserves with the Fed in excess of its reserve requirements, $6 million in T-Bills, and a credit line of $10 million to borrow in the repo market. It currently has lent $3 million in the Fed Funds market and borrowed $4 million from the Federal discount window to meet its seasonal needs. a) What are the bank's total available sources of liquidity? b) What is the net liquidity of the bank