With dynamic NAT, performing translation for inside addresses only, what causes NAT table entries to be created?

With dynamic NAT, performing translation for inside addresses only, what causes NAT table entries to be created?

• The first packet from the inside network to the outside network
• The first packet from the outside network to the inside network
• Configuration using the ip nat inside source command
• Configuration using the ip nat outside source command

Explanation: With dynamic NAT, the entries are created as a result of the first packet flow from the inside network.