When considering inconsistent knowledge and human beings, which of the following statements is most accurate?

a$.$ Most, if not all, humans function with an inconsistent knowledge base, and there is no single known approach for resolving inconsistencies

b$.$ All humans have problems dealing with inconsistent knowledge and$/$or beliefs

c$.$ Humans often become psychotic as a result of inconsistent knowledge

d$.$ Humans use straightforward logical inference and reasoning to cope with inconsistent knowledge