A fireman has to carry an injured person of mass 40 kg from the top of a building with the help of the rope which can with stand a load of 100 kg. The acceleration of the fireman if his mass is 80 kg will be

Question

$$(a)\;8.17 m/s^2 \quad (b)\; 9.8 m/s^2 \quad (c)\;17.97 m/s^2 \quad(d)\;1.63 m/s^2$$