Select the incorrect option regarding Single Cell Protein $(SCP)$.

Explain single cell protein $(SCP)$.

Given below are two statements with respect to single cell protein.
Statement $I$: Single cell protein refers to the crude,or refined edible protein,extracted from pure microbial cultures or from dead or dried cell biomass.
Statement $II$: $SCP$ can be readily used as fodder for achieving fattening of calves,pigs,in breeding fish and in poultry.
In the light of the above statements,choose the correct answer from the options given below.

Single cell protein is an alternative protein source for animal and human nutrition formed from certain beneficial microorganisms like

$A$: Proteins produced by microorganisms are known as Single Cell Proteins $(SCP)$.
$R$: The production of Single Cell Proteins causes environmental pollution.

$(A)$ The shift from grain to meat diets creates more demands for cereals. Why?
$(B)$ $A$ $250 \ kg$ cow produces $200 \ g$ of protein per day, but $250 \ g$ of $Methylophilus \ methylotrophus$ can produce $25 \ \text{tonnes}$ of protein. Name this emerging area of research. Explain its benefits.