Can someone assist me with this?

L (kg:-m?/s) ----- Object A Object B t(s) Two disks, A and B, each experience a net external torque that varies over an interval of 5 seconds. Disk B has a rotational inertia that is twice that of Disk A. The graph shown represents the angular momentum of the two disks as functions of time between time t =0 s and t =5 s. The average magnitudes of the net torques exerted on disks A and B from t=0tot=5 sare 7, and 7, respectively. Which of the following expressions correctly relates the magnitudes of the average torques? (A) T,=4r1, (B) 1,=27, 1 () 'L'Bzer 1 (D) TBzer