What is the relationship between ( vec{E_f} ,and , vec{S_f} ) using the over-relaxed approach?

• A. ( vec{E_f}=( vec{S_f} ). vec{e} )
• B. ( vec{E_f}=( frac{S_f}{cos u2061 theta}) vec{e} )
• C. ( vec{E_f}=( vec{S_f}) vec{e} )
• D. ( vec{E_f}=(( vec{S_f}). vec{e} ) vec{e} )