If buyers today become more willing and able than before to purchase larger quantities of stand up paddle boards (SUPs) at each price of SUPs, then a. the demand curve for SUPs will shift to the right. b. we will observe a movement upward and to the left along the demand curve for SUPs. c. we will observe a movement downward and to the right along the demand curve for SUPs. d. the demand curve for SUPs will shift to the left.