Which of the Following Is an Example of Informal Eldercare

Which of the following is an example of informal eldercare?

A) In-home Care provided by a paid nurse who dresses casually and speaks to the patient and his or her family in colloquial language
B) Unpaid care provided by the person's granddaughter
C) Paid care provided by a self-employed home health assistant who advertises on Craig's List
D) Recreational therapy provided to residents in a skilled nursing facility