Which of these represent spatial averaging?

• A. \(\frac{1}{V}\sum\phi\)
• B. \(lim_{V→∞}\frac{⁡1}{V}\int_V \phi dV\)
• C. \(\frac{1}{T}\int_T \phi dT\)
• D. \(\frac{1}{N}\int_N \phi dN\)