Ks supp ?

Hi I mean ... this rlly cant be ks{{sticker:sg-lux-2}} When u play Lux supp full ap , do all the damage while the adc farming , then ult and get the kill The adc gonna be like "Omg report !!! My kills !!! U are the supp !!" Even the enemy is far away and the adc cant get the kill{{sticker:zombie-brand-facepalm}} Am I wrong when i get the kills , is there a rules or something prevent{{sticker:sg-lux-2}} that
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