An evolutionary explanation of the origin of plants and animals was given by

Following are the two statements regarding the origin of life.
$(A)$ The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
$(B)$ The first autotrophic organisms were the chemoautotrophs that never released oxygen.
Of the above statements,which one of the following options is correct?

The first life on Earth originated in ........ .

$S.L.$ Miller conducted an experiment in $1953$ to support the:

Who performed the first experiment on chemical evolution and the origin of life?

Write an explanatory note on the origin of life.