Determine whether the equation is exact. If it is, then solve it. 3t y dy + (3 In y + 7)dt = 0 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The equation is exact and an implicit solution in the form F(t,y) = C is = C, where C is an arbitrary constant. (Type an expression using t and y as the variables.) O B. The equation is not exact.

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