How can we interpret the graph of relative tracking errors (duration strategy) over time as well as the yield to maturity of the bond index? And how could we improve the replication of the index knowing that we used 2 bonds out of 3. Note: left axis = relative replication errors. Right axis = bond index yield to maturity.

Relative Replication Error (\%) t+1 0,03473689%0,07466660%0,05087569%0,01056842%0,01645447%0,01080570%0,06841041%0,05085499%0,08255261%0,08832937%0,06344471%0,06815392%0,00704012%0,01406944%0,00090175%0,00345211%0,05487546%0,02210237%0,04191505%0,06369080%0,05186382% Q2. B Peplicationt