A four-wheel-drive tractor has a static weight of $50 \mathrm{kN}$ with $40 \%$ weight on rear axle and $60 \%$ on front axle. The wheel base is $2 \mathrm{~m}$. The tractor is pulling a disc harrow that exerts a level drawbar pull at a hitch height of $0.5 \mathrm{~m}$ from the ground. During the operation, when the dynamic reaction on each axle is same, the dynamic traction ratio developed by the tractor is

(A) 0.2

(B) 0.4

(C) 0.5

(D) 0.8

A four-wheel-drive tractor has a static weight of $50 \mathrm{kN}$ with $40 \%$ weight on rear axle and $60 \%$ on front axle. The wheel base is $2 \mathrm{~m}$. The tractor is pulling a disc harrow that exerts a level drawbar pull at a hitch height of $0.5 \mathrm{~m}$ from the ground. During the operation, when the dynamic reaction on each axle is same, the dynamic traction ratio developed by the tractor is

(A) 0.2

(B) 0.4

(C) 0.5

(D) 0.8

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