Given below are certain characteristics of thurioside protein. Which of the statement given are correct? (i) It is activated by alkaline pH of the gut of the insect pest ultimately killing it. (ii) It binds with the epithelial cells of the midgut of the insect pest ultimately killing it. (iii) It does not kill the carrier bacterium which is itself resistant to this toxin.

• A. (i) and (ii)
• B. (i) and (iii)
• C. (ii) and (iii)                                
• D. (i), (ii) and (iii)