The following Ellingham diagram depicts the oxidation of C, CO and Fe. Which of the following is correct?

I. FeO can be reduced by C below 600 K.
II. FeO can be reduced by CO below 600 K.
III. FeO can be reduced by C above 1000 K.
IV. FeO can be reduced by CO above 1000 K.

A

II and III

B

I and IV

C

I and III

D

II and IV