Indicate Whether Each of the Following Descriptions Better Applies to an Adaptive

Short Answer

Indicate whether each of the following descriptions better applies to an adaptive (A) or innate (I) immune response. Your answer would be a four-letter string composed of letters A and I only, e.g. AAAA.
( ) It is found in invertebrate and vertebrate animals as well as in plants.
( ) It has a long-lasting memory.
( ) It is highly specific to the particular invading pathogen.
( ) It employs natural killer (NK) cells to induce apoptosis in infected host cells.