Assertion : Vitamins $B_2$ is found in cereals, green vegetables, brewer's yeast, egg white, milk and liver.

Reason : It can be commercially produced by some yeasts.

Penicillin was discovered by

Choose correct sentences.

$(i)$ Dosa and Idli is fermented by yeast.

$(ii)$ Saccharomyces cereviceae is a yeast.

$(iii)$ $LAB$ increase quality of vitamin $B_{12}$.

$(iv)$ Whisky and brandy are fermented beverages which produced without distillation.

$A$ : After $24\; hours$ toddy becomes unpalatable.
$R$ : Toddy left for a few hours undergoes fermentation.