B is awful idea ... A and C are great. I would go for C - parents will spent money for an app for their kids without even thinking about it. And with A you migh

B is awful idea ... A and C are great. I would go for C - parents will spent money for an app for their kids without even thinking about it. And with A you might be going up against something that FB is going to release in the future which will just crush your business.