Calculate the Wronskian. W[ex, ex, cos x, sin x] = -8 (Simplify your answer.) Therefore, the set of functions {ex, ex, cos x, sin x) forms a fundamental solution set for the differential equation y(4) - y = 0. How can a general solution be determined from the fundamental solution set? O A. Express the fundamental solution set as the sum of each particular solution times the value of the Wronskian. O B. Express the fundamental solution set as the sum of each particular solution. O C. Express the fundamental solution set as the product of each particular solution. O D. Express the fundamental solution set as a linear combination using arbitrary constants.

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