Four elements were tested in the laboratory and gave the results in the table below. Which element is a metalloid?
`|{:("Element","Appearance","Conductivity","Bahvaiour with HCI"),(A,"Slight luster","High","Bubbles slowly"),(B,"Shiny","Low","No reaction"),(C,"Dull","None","No reaction"),(D,"Shiny","High","Bubbles rapidly"):}:|`
A. Element A
B. Element B
C. Element C
D. Element D
