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