As per the screenshot, what does the bond yield curve change from the beginning of $2020$ as shown by the yellow line, to July of $2023$ as shown by the green line imply about the difference in the output gap at each time?In $2020,$ there was probably a positive output gap, while in $2023,$ real GDP was relatively lower to potential GDP than in $2020.$In $2020,$ there was probably a negative output gap, while in $2023$ real GDP was relatively higher to potential GDP than in $2020.$In $2020,$ there was probably a negative output gap, while in $2023$ real GDP was relatively lower to potential GDP than in $2020.$