Verify that the given differential equation is exact; then solve it. (8x + 7y)dx + (7x+6y)dy = 0 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The equation is exact and an implicit solution in the form F(x,y) = C is 4x² + 7xy + 3y² = C, where C is an arbitrary constant. (Type an expression using x and y as the variables.) B. The equation is not exact.

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