Rhett decides to build a square room for his movie and music collection. If the area of the room is 9x2 − 6x + 1 square feet, what is the length of one side of the room?
A(3x + 1) feet
B(9x − 1) feet
C(3x − 1) feet
D(9x + 1) feet
A(3x + 1) feet
B(9x − 1) feet
C(3x − 1) feet
D(9x + 1) feet