40. A helicopter rotor blade can be considered as a long thin rod, as shown in Fig. 6. If each of the three-rotor helicopter blades is 3.75 m long and has a mass of m = 1.60 x 10² kg, which of the following value is closest to the moment of inertia of the three rotor blades about the axis of rotation in kg·m²?

(A) 5000
(B) 2000
(C) 1000
(D) 100
(E) 20

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