The first cell produced on Earth is:

The ratio of methane,ammonia,and hydrogen in Stanley Miller's experiment was

The atmosphere became oxidising with the appearance of

The swan-necked flask experiment proved:

The first organisms to evolve on Earth were-

Two statements regarding the origin of life are given below:
$(a)$ The first organisms that emerged on Earth are believed to have been devoid of chlorophyll and incapable of respiration.
$(b)$ The first food-producing organisms were chemosynthetic and never released oxygen.
Based on the above statements,which of the following options is correct?