The reserve ratio is 20 percent. the fed buys $1 million in government securities from a bond dealer by transmitting the funds to the dealer's deposit account at bank a. bank a makes the maximum loan possible to a construction company, which buys materials with the loan. the check is deposited in bank b, which loans out all it can to a car dealership. to this point, the money supply has increased by.. a)$1 million b)$1.8 million c)$2.44 million d)$3 million.