The value of tolerance unit is identified by which equation accurately though tolerance grade?
1
\(i = 0.45 \times \sqrt[3]{D} +0.001 \times D\)
2
\(i = 0.45 \times \sqrt[3]{D} +0.1 \times D\)
3
\(i = 0.90 \times \sqrt[3]{D} +0.001 \times D\)
4
\(i = 0.45 \times \sqrt[3]{D} +0.001\)