Your client, whom you have worked with over the past 20 years, recently died at 63. At the time of their death, they were retired and receiving Social Security retirement benefits. Your client is survived by their spouse of 15 years, who is 54 years old, and their only child, who is 13 years old. They are both in good health. Your client's spouse is unemployed, but as a surviving spouse, they are eligible for Social Security benefits because they currently care for the couple's dependent child. The surviving spouse recently met with you to inquire about how long they are eligible to receive child-in-care benefits as a surviving spouse. You inform them that they are eligible to receive the current benefits until:
a) The child graduates from college
b) The child graduates from high school
c) The child reaches the age of 18 years old
d) The child reaches the age of 16 years old