Consider three-dimensional Euler equations. What will you do to get the value of (( frac{ partial^2 }{ partial t^2})_{i,j}^t )?

• A. Differentiate ( rho_{i,j}^t ) with respect to time twice
• B. Differentiate the continuity equation with respect to time
• C. Differentiate the value of (( frac{ partial rho}{ partial t})_{i,j}^t ) with respect to time
• D. Differentiate the value of ( rho_{i,j}^t ) with respect to time twice