Answer: -1

## Explanation The covariance between two random variables X and Y is calculated using the formula: \[\text{Cov}[X,Y] = E[XY] - E[X]E[Y]\] Given: - E[X] = 3 - E[Y] = 4 - E[XY] = 11 \[\text{Cov}[X,Y] = 11 - (3 \times 4)\] \[\text{Cov}[X,Y] = 11 - 12\] \[\text{Cov}[X,Y] = -1\] Therefore, the covariance is -1, which corresponds to option A.

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