For LTI systems specified in the questions below, mark (Y) for correct statements and (N) for incorrect statements. a) The system is stable ( ) ()=(+2)2(1) b) The system can be physically implemented ( ) RoCH(z) : 1<||<2 c) RoCH(z) : 1<|| ( ) (^jw)=(z)|=^jw d) The system is the ideal all-pass filter ( ) (^jw)=^j2w e) The system is recursive (with feedback) ( ) ()=(1)/(2)(3) f) The causal FIR system is ( ) ()=2()(1)+2(2)3(1)