On February 24, 2020, Allison's building, with an adjusted basis of $3,546,550 (and used in her trade or business), is destroyed by fire. On March 31, 2020, she receives an insurance reimbursement of $4,610,515 for the loss. Allison invests $4,149,464 in a new building and buys stock with the balance of insurance proceeds. Allison is a calendar year taxpayer. a. By what date must Allison make the new investment to qualify for the nonrecognition election? b. Assuming that the replacement property qualifies as similar or related in service or use, what are Allison's realized gain, recognized gain, and basis in the replacement building? Allison's realized gain is $fill in the blank 2 and recognized gain is $fill in the blank 3. Her basis in the new building is $fill in the blank 4.