Relation between E, K and G is given by

• A. \(E = \frac{{9KG}}{{3K + G}}\)
• B. \(E = \frac{{3K + G}}{{6KG}}\)
• C. \(E = \frac{{6KG}}{{K + 3G}}\)
• D. \(E = \frac{{3KG}}{{3K + G}}\)