Does the sentence "Following the public school tradition, Eton is a full boarding school, which means all pupils live at the school, and it is one of four such remaining single-sex boys' public schools in the United Kingdom (the others being Harrow, Radley, and Winchester) to continue this practice." answer the question "How many public schools are regulated by the 1868 Public Schools Act?"

Options are:
(1). yes.
(2). no.
(2).