Determine the Number of Real Solutions of the Equation 5x $4$

Multiple Choice

Determine the number of real solutions of the equation 5x $4$ - 3x $2$ = 10x $5$ - 20x $3$ + 5.

A) 0
B) 1
C) 2
D) 3
E) 4
F) 5
G) 6
H) 7