Pick up the correct statement from the following?

A. For steel castings, the minimum tensile strength is 41 kg/mm2 and minimum yield stress is 20.5 kg/mm2

B. For mild steel the minimum tensile strength is 44 kg/mm2 and minimum elongation of 23% on a gauge length of 5.65A

C. For high tensile steel, the minimum tensile strength is 58 kg/mm2

D. All the above
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