answer is D. i will lile to know the steps to solve it.

15. Ken owns 1,000 shares of West Corporation common stock which he purchased in 20X4 for $18,000. On 3-30-X7 he purchases an additional 350 shares for $4,000. On 4-20-X7 he sells the original 1,000 shares for $10,000. On 5-15-x7 he purchases 400 shares of West stock for $7,000. What is Ken's recognized gain or loss as a result of the sale of the stock and what is the basis for the shares purchased on 5-15-X7, respectively? a $2,000 loss; $ 9,800 basis b. $6,000 loss: $10,200 basis c. $8,000 loss: $ 7.000 basis d. $2,000 loss; $10,200 basis e. None of the above