If the neutral axis of a T-beam is below the slab, the relationship between the
flange width B, depth of neutral axis n, thickness of the slab $$d_s$$, effective depth of the
beam d, gross area of tensile steel $$A_t$$ and the modular ratio m may be stated as

A

$$Bd_s(n-\frac{d_s}{2})=mAt(d+n)$$

B

$$Bd_s(n+\frac{d_s}{2})=mAt(d-n)$$

C

$$Bd_s(n-\frac{d_s}{2})=mAt(d-n)$$

D

None of these