What's the correct option?

Kathleen correctly determines four arithmetic means between - 7 and 14. What values does Kathleen determine? Kathleen determines the four arithmetic means to be -2.8. 1.4 5.6, and 9.8. Kathleen determines the four arithmetic means to be - 2.8, 1.4, 5.6, and 9.4. Kathleen determines the four arithmetic means to be - 2.8. 1.6, 5.6, and 9.8. Kathleen determines the four arithmetic means to be - 2.8, 1.6, 5.8. and 10