Read the following four statements $(A -D)$ about certain mistakes in two of them :
$(A)$ Dough, which is used for making foods such as dosa and idli is fermented by fungi and algae
$(B)$ Toddy, a traditional drink of southern India is made by fermenting sap from palms.
$(C)$ Large hole in 'Swiss cheese' are due to production of large amount of methane by Propionibacterium
sharmanii
$(D)$ In our stomach, lactic acid bacteria play very beneficial role in checking disease – causing microbes
Which are the two statements having mistakes ?

Baker's yeast is

Dosa and Idli are fermented preparation of rice and black gram. The fermentation is done with

Study the following flow chart that shows curd formation from milk and select the correct option for $A$ and $B$

Milk is incubated with curd

$\downarrow$

LAB shows growth in milk

$\downarrow$

Production of …..$A$…..

$\downarrow$

Coagulation and digestion of milk protein

$\downarrow$

Improved nutritional quality by increased ….$B$….

Which bacterium responsible for large holes in 'Swiss chees' are due to production of a large amount of $CO_2$ ?