Which is a correct rotation statement?
a. Rotate triangle ABC 90 degrees clockwise using center A.
b. Rotate triangle ABC 30 degrees counterclockwise using center B.
c. Rotate triangle ABC 180 degrees around center B.
d. Rotate triangle ABC clockwise around center C by 90 degrees
e. Only choices a and b are correct
f. All choices a, b, c, d are correct.
g. There are no correct rotation statements given