According to BS standard, which of the following relation is correct about gauge length of cross section area ‘A’?

According to BS standard, which of the following relation is correct

1.	According to BS standard, which of the following relation is correct about gauge length of cross section area ‘A’?
A.	L = 2.51\(\sqrt{A}\)
B.	L = 4.51\(\sqrt{A}\)
C.	L = 4\(\sqrt{A}\)
D.	L = 3.51\(\sqrt{A}\)
Answer» D. L = 3.51\(\sqrt{A}\)