The thickness of oxide film is y at time t. If K1, K2 and K3 are the temperature dependent constants, the parabolic law of oxidation is given by
A. y2 = 2K1t + K2
B. y = K1 ln (K2t + K3)
C. y = K1t + K2
D. y = K1t3 + K2
Answer: Option A
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