<prompt>  Which of these are true of E. coli -a The L.T labile toxin in ETEC acts via cAMPb In types causing UTI the organism attaches via pilic The ST stable-toxin of ETEC is responsible for causing hemolytic-uremic syndrome HUSd EIEC invasiveness is under plasmid controle In EPEC the toxin helps in invasion by the bacteriaabdbcdabcab 