D Question 4 1 pts Which two statements about iron oxides and oxhydroxides are TRUE? y-Fe2O3 is the only naturally occurring ferrimagnetic iron oxide. Twelve iron oxides and oxhydroxides are common in nature The most stable naturally occurring iron oxide is a-Fe2O3 DE Synthetic E-Fe2O3 can be prepared by sol-gel chemistry Naturally occurring iron(III) oxides occur as four mineral polymorphs denoted by the Greek letters a, B.y and 8