Which statements are true?I. Orders and quotes for NMS stocks can only be accepted or posted in penny increments in exchange display books. II. Orders and quotes for NMS stocks can be accepted or posted in sub-penny increments in exchange display books. III. Trade executions of NMS stocks can only occur in penny increments. IV. Trade executions of NMS stocks can occur in sub-penny increments. A. I and IIIB. I and IVC. II and IIID. II and IV

Which of the statements best describes why the aggregate demand curve is downward sloping? an increase in the aggregate price level causes consumer and investment spending to fall, because consumer purchasing power decreases and money demand increases. as the aggregate price level increases, consumer expectations about the future change. as the aggregate price level decreases, the stock of existing physical capital increases. as a good's price increases, holding all else constant, the good's quantity demanded decreases.