The length of the major axis of an ellipse is 10 and its eccentricity is 0.6. The centre is at the origin and the major axis is along the x-axis. Identify the correct standard equation of the ellipse.
a) 16x2+25y2=1
b) 25x2+16y2=1
c) 25x2+9y2=1
d) 34x2+16y2=1