Search the FRED database for the "investment share of GDP" and one of the first links to appear is for "gross private domestic investment. 11 a. Display a graph of this series from 1990-1-1 to 2021-10-1. b. How does its average value compare to the ratio of capital income to output learnt in class, "XK = }? = c. There should be a significant drop-off in the graph of question (a). Explain the potential reasons of the significant drop-off observed in a few sentences. d. The drop-off during pandemic is not as significant as what happened in other recession periods. Explain your understanding briefly. Search the FRED database for the "investment share of GDP" and one of the first links to appear is for "gross private domestic investment. 11 a. Display a graph of this series from 1990-1-1 to 2021-10-1. b. How does its average value compare to the ratio of capital income to output learnt in class, "XK = }? = c. There should be a significant drop-off in the graph of question (a). Explain the potential reasons of the significant drop-off observed in a few sentences. d. The drop-off during pandemic is not as significant as what happened in other recession periods. Explain your understanding briefly