Examine the Triple Sugar Iron (TSI) agar tubes in the image below and then answer the questions for Tube A and Tube B. A control tube has been included in the image for comparison.Tube A results:Lactose/sucrose fermentation Blank 1 Question 8[select: , Negative, Positive] Gas from the fermentation of glucose Blank 2 Question 8[select: , Positive, Negative] Hydrogen sulfide (H2S) production Blank 3 Question 8[select: , Negative, Positive] Tube B results:Lactose/sucrose fermentation Blank 4 Question 8[select: , Positive, Negative] Gas from the fermentation of glucose Blank 5 Question 8[select: , Negative, Positive] Hydrogen sulfide (H2S) production Blank 6 Question 8[select: , Negative, Positive]多重下拉选择题