Answer:
$3,886
Explanation:
A self employed taxpayer can deduct the employer portion of self employment taxes that he/she pays during the year. In this case, total self employment taxes are $7,771 x 50% = $3,885.50 corresponding to employer taxes (the other 50% are not deductible since they correspond to employee taxes).
Self employment taxes include Medicare and Social Security taxes (FICA taxes basically).