Carl received a Form RRB$-1099,$ Payments by the Railroad Retirement Board, showing a gross benefit paid in $2023$ of

$$24,200.$ Choose the response that completes the following sentence and correctly describes this type of payment.

This payment represents Carl's:

Total contributions to his railroad retirement and is used to compute the taxable amount of his pension benefit.

Social security payment paid by the Social Security Administration.

Social security equivalent benefit portion of tier $1$ railroad retirement paid by the Railroad Retirement Board.

Pension amount from the Railroad Retirement Board