Put the following ores in descending order of their iron content:
1. Haemetite
2. Magnetite
3. Limonite
4. Siderite
A. 1, 2, 3, 4
B. 2, 1, 3, 4
C. 2, 1, 4, 3
D. 1, 2, 4, 3
Answer: Option B
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