The maximum value of 2x + 3y + 5z over all the points (x, y, z) on the unit sphere occurs at _______ .
1
\((\frac{2}{\sqrt38},\frac{3}{\sqrt38},\frac{5}{\sqrt38} )\)
2
\((\frac{2}{\sqrt10},\frac{3}{\sqrt10},\frac{5}{\sqrt10} )\)
3
\((\frac{5}{\sqrt38},\frac{3}{\sqrt38},\frac{2}{\sqrt38} )\)
4
\((\frac{2}{\sqrt19},\frac{3}{\sqrt19},\frac{5}{\sqrt19} )\)