55 of 100. Allen had an AGI of $95,000 in 2022. During the year, he made a $700 cash contribution to the American Red Cross. If he deducts this contribution as an itemized deduction on Schedule A, which of the following forms of substantiation is required? Allen must: Include a description of the donation and the donee organization as a supplemental statement to file it with his Form 1040. Obtain a Form 1098-C from the donee organization. Obtain a contemporaneous written acknowledgement from the organization. Complete Form 8283 and file it with his return