Decide whether the fcullc-wing statements are true cur false. [ilThere exists an integerasuch thata -[ 1] = E. select If the statement is true. give an integer for which it is true: a. 2D {ii} There exists a natural numbera. such that 19 + a. = [1. select If the statement is true. give a natural number fcir which it is true: a. :C] [iii] There exists a natural number a such that 19 - a = 19. select If the statement is true. give a natural number fcIr which it is true: a. 2C]