7. For each of the following statements, indicate whether it is correct by ticking the appropriate box : a) A decrease from coefficient legal of Treasury () allow to banks commercial to grant more of credits on base of one same amount of deposits, inducing a increase of the value from multiplier monetary and so of the mass monetary in circulation in the economy ; b) When the Bank Central practice a operation of "open market", consistent in procurement of good from Treasure, the mass monetary in traffic in the economy increases, all things being equal moreover ; c) Whether the fraction of the mass monetary detained under form of change fiduciary is of 25%, and if the coefficient of Treasury legal () is of 20%, then the multiplier money is 2.5; d) Whether the fraction of the mass monetary detained under form of change fiduciary is of 20% and if the legal cash coefficient is 25%, then the money multiplier is 2.5; e) None of the above statements is correct