What effect did these changes have on the size of the money multiplier? A. Prior to 2015 , the increase in ER/D was significantly larger than the increase in C/D, causing the value of the money multiplier to increase. This changed after 2015 when it began to decrease until 2020. B. It was erratic until 2015, after which the decrease in C/D was significantly larger than the increase in ER/D, causing the value of the money multiplier to decline. C. It was erratic until 2015 , after which the increase in C/D was significantly larger than the decrease in ER/D, causing the value of the money multiplier to decline. D. It was erratic until 2015 , after which the decrease in ER/D was significantly larger than the decrease in C/D, causing the value of the money multiplier to rise