Tamara, who is employed, filed her tax return for the last tax year on April 15th of this year. CRA mailed her a Notice of Assessment on June 3rd of this year. A month later in July, Tamara realized that she had forgotten to claim her childcare expenses for last year. Which of the following statements are true?

1. Tamara should file an objection as soon as possible.

2. CRA will reassess Tamara's return for last year at her request in light of the new information.

3. Tamara should file a new return for last year with the new information on it.

4. CRA will not reassess her return because she has missed the deadline for requesting reassessment.