The tier I annuity component of a widow(er), remarried widow(er), or a surviving divorced spouse with a child of the employee in his or her care is 75 percent of the PIA computed under §228.10 of this part. The amount may be adjusted for certain reductions and deductions described in §§228.15-228.20 of this part and is subject to the family maximum. See §228.14 of this part.