For design of Flexure members, the strain in the reinforcing bars under tension at ultimate state as per IS 456-2000 shall not be less than

A

$$\frac {f_y}{1}.15E$$

B

$$\frac {f_y}{1}.15E_s + 0.002$$

C

$$\frac {f_y}{E_s}$$

D

$$\frac {f_y}{E_s} + 0.002$$