Suppose we buy an AT&T bond (as in the image below) today. The settlement rule is T+2, meaning the settlement date is Mar 7, 2022. The current YTM of the bond is 2.783041 %.

Calculate the Modified Duration of the bond in years?

Note that you need to use the convention of day count as in the image.

Round your answer to 2 decimal places. For example, if your answer is 25.689, please write down 25.69.

- T 4.100 19-JAN-2026 MTN AT\&T INC us Corp, Fixed Coupon, IG, RegS, Kangaroo Close Bid: 104.798 Close Ask: 105.174 Close Bid Yield: 2.783041 Clos \begin{tabular}{|l|l|l|l|l|l|} \hline Overview & All Quotes & News & Description & REPS Valuation & Schedules \\ \hline \end{tabular} BOND INFORMATION PRINCIPAL / COUPON INFORMATION Floating Rate Note Show More MARKET CONVENTIONS Day Count Basis Actual/Actual ICMA, Act/Act ICM... Settlement Trade +2 Business Days - T 4.100 19-JAN-2026 MTN AT\&T INC us Corp, Fixed Coupon, IG, RegS, Kangaroo Close Bid: 104.798 Close Ask: 105.174 Close Bid Yield: 2.783041 Clos \begin{tabular}{|l|l|l|l|l|l|} \hline Overview & All Quotes & News & Description & REPS Valuation & Schedules \\ \hline \end{tabular} BOND INFORMATION PRINCIPAL / COUPON INFORMATION Floating Rate Note Show More MARKET CONVENTIONS Day Count Basis Actual/Actual ICMA, Act/Act ICM... Settlement Trade +2 Business Days