Which two statements describe features or functions of the logical link control sublayer in Ethernet standards? $($Choose two.$)$Logical link control is implemented in software.Logical link control is specified in the IEEE $802\mathrm{.}3$ standard.The LLC sublayer adds a header and a trailer to the data.The data link layer uses LLC to communicate with the upper layers of the protocol suite.The LLC sublayer is responsible for the placement and retrieval of frames on and off the media.