A. phosphorus, nitrogen and molybdenum
B. manganese, copper and zinc
C. boron, sulphur and iron
D. calcium, magnesium and potassium
Correct Answer: Option D
D. calcium, magnesium and potassium
A. phosphorus, nitrogen and molybdenum
B. manganese, copper and zinc
C. boron, sulphur and iron
D. calcium, magnesium and potassium
Correct Answer: Option D
D. calcium, magnesium and potassium
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