Free bird species share a habitat. Bird A eats insects and plant seeds, bird B drinks flower nectar, bird C eats plant seeds. A drought occurs in their habitat, and that seasons plant wipes out entirely. What is the likely outcome for each bird.
Bird B survives; either bird A or bird C dies, and the other survives
Bird A survives; either bird B or bird C dies, the other survives
Bird A survives; both bird B and bird C die
Bird B survives both bird A and bird C die