No, hepc in an equal opportunity virus. It is transmitted from blood to blood contact.
The number one mode of transmission is IV Drug use so most children are not exposed to that. Blood transfusion was another common form of transmission, however, all blood is now screened for for hep b & c. I won't say they catch 100% of infected blood but it's pretty close to that.
In my opinion, children are less likely to be exposed to hepc. There is a very small (5%?) chance it can be passed in utero to the child from an infected mother.
No, they are not. In fact it just may be the opposite. Young children have very strong immune systems and they may be able to fight off the virus more successfully than adults.