Sketch the region bounded by the given lines. Then express the region's area as an iterated double integral and evaluate the integral. y =x, y =- 21 and y = 4 Sketch the region. Choose the correct answer below. O A. OB. OD. Ay 8- 8- 6- 4- 2- 6- 4- 2- 2- 12 12 -8 -4 2- 4 12 12 -4 -2- 2- 4. -4 Express the shaded area as an iterated integral. Select the correct choice below and fill in the answer boxes to complete your choice.

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