LO.1, 2, 4 Karen makes the following purchases and sales of stock:

Transaction Date Number of Shares Company Price per Share Purchase 1–1–2010 300 MDG $ 75 Purchase 6–1–2010 150 GRU 300 Purchase 11–1–2010 60 MDG 70 Sale 12–3–2010 200 MDG 80 Purchase 3–1–2011 120 GRU 375 Sale 8–1–2011 90 GRU 330 Sale 1–1–2012 150 MDG 90 Sale 2–1–2012 75 GRU 500 Assuming that Karen is unable to identify the particular lots that are sold with the original purchase, what is the recognized gain or loss on each type of stock as of the following dates:

a. 7-1-2010.

b. 12-31-2010.

c. 12-31-2011.

d. 7-1-2012.