I find C to be interesting -- my gut suspects it's probably correct & accurate, but not having ever been married I'd be interested in hearing you elaborate further on that point specifically.
At 15, I was living in a small village in Chile, without parents. There were 2 English speakers in this town, and we learned to work together to learn a new language, adopt a new culture, reconcile differences, and more.
Those experiences have shaped my outlook on everything from relationship management to problem solving to effective communications.
IMHO, a great way to become an effective entrepreneur is to immerse yourself in high stress, difficult situations that require on-the-fly problem solving over and over again.
Your marriage is more important to your long-term success than your start-up is, too.