In a pre-stressed concrete beam section shown in the figure, the net loss is $10 \%$ and the final prestressing force applied at $X$ is $750 \mathrm{kN}$. The initial fiber stresses (in $\mathrm{N} / \mathrm{mm}^{2}$ ) at the top and bottom of the beam were:

(A) 4.166 and 20.833

(B) -4.166 and -20.833

(C) 4.166 and -20.833

(D) -4.166 and 20.833

In a pre-stressed concrete beam section shown in the figure, the net loss is $10 \%$ and the final prestressing force applied at $X$ is $750 \mathrm{kN}$. The initial fiber stresses (in $\mathrm{N} / \mathrm{mm}^{2}$ ) at the top and bottom of the beam were:

(A) 4.166 and 20.833

(B) -4.166 and -20.833

(C) 4.166 and -20.833

(D) -4.166 and 20.833

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