Which of the following could be used to replace /* missing code */ so that findClosest will work as intended?
Consider the following method, which is intended to return the element of a 2-dimensional array that is closest in value to a specified number, val.

/** @return the element of 2-dimensional array mat whose value is closest to val */
public double findClosest(double[][] mat, double val)
{
    double answer = mat[0][0];
    double minDiff = Math.abs(answer - val);
    for (double[] row : mat)
    {
        for (double num : row)
        {
            if ( /* missing code */ )
            {
                answer = num;
                minDiff = Math.abs(num - val);
            }
        }
    }
    return answer;
}

Which of the following could be used to replace /* missing code */ so that findClosest will work as intended?