select The correct answer

The gradient of the tangent line to the graph of a certain function at point (x, y) on the graph is given by d =6VT - 51. If the graph of the function y passes through point (4,-7), find an expression for the function y. Select one: O a. y = 4x 1.5 - 5x^2 + 1 O b. y = 4x^0.5 - 5x^2 + 1 O c. y = 4x^1.5 - 5x^2 O d. y = 4x 1.5 - 5x^2 - 1