What is the purpose of the "dissenting opinion" of the Supreme Court?

Responses
A It has no real purpose upon the court.It has no real purpose upon the court.
B Creates a binding precedent for future rulings.Creates a binding precedent for future rulings.
C It is cited as a persuasive decision when arguing that the court's holding should be limited or overturned.It is cited as a persuasive decision when arguing that the court's holding should be limited or overturned.
D It is just a differing opinion that is included in the final document so that all opinions are expressed for the record.

C It is cited as a persuasive decision when arguing that the court's holding should be limited or overturned.