An object with a mass of 5 kg is thrown with an initial velocity of 6 m/s. If the object has an initial height of 10 meters above the ground, what is the magnitude of the initial gravitational potential energy of the object? The acceleration due to gravity is 9.8 m/s^2

A) 490 joules
B) 580 joules
C) 409 joules
D) 90 joules