DNS is a unique protocol in terms of its transport selection because simple name lookups use UDP, while $$zone transfers$$ that transfer a large amount of name resolution information from one DNS server to another use TCP$.$ What is the least likely reason for using this approach?A$.$ name lookups are simple request$-$response.B$.$ TCP is a reliable protocol.C$.$ An unreliable zone transfer could result in serious name resolution discrepancies in a network.D$.$ UDP cannot be used for bulk file transfers.