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In this equation, what should be the coefficients of the reactants and products?

I2 + O2->I4O9

Athe coefficent of iodine is 2, oxygen is 9, and the product is 2
Bthe coefficent of iodine is 9, oxygen is 4, and the product is 2
Cthe coefficent of iodine is 4, oxygen is 9, and the product is 2
Dthe coefficent of iodine is 2, oxygen is 9, and the product is 2