Three years ago, Adrian purchased 275 shares of stock in X Corporation for $34,100. On December 30 of year 4, Adrian sells the 275 shares for $25,850.

Assuming Adrian has no other capital gains or losses, how much of the loss is Adrian able to deduct on their year 4 tax return?

Assuming Adrian has no other capital gains or losses, except that on January 20 of year 5, Adrian purchases 275 shares of X Corporation stock for $25,850. How much loss from the sale on December 30 of year 4 is deductible on Adrian's year 4 tax return?

What basis does Adrian take in the stock purchased on January 20 of year 5?