What is the sentiment of the following review?
Here is another 5 star review for Joe's Mobile Detailing! Jonathan came out to our house and did a complete detail of our black 2013 Cadillac XTS Platinum. He did a fantastic job on our Caddy! We are so pleased with Jonathan's work that we have scheduled him to come out again this week to do our 2010 white Buick LaCrosse. You cannot go wrong with Joe's Mobile Detailing!
OPT:
a). negative;
b). positive;
b).