Directions: In the following questions, a statement of assertion is followed by a statement of reason.
Mark the correct choice as:
(1) Both Assertion (A) and Reason (R) are true and Reason is the correct explanation of Assertion.
(2) Both Assertion (A) and Reason (R) are true but Reason is not the correct explanation of Assertion (A).
(3) Assertion (A) is true but Reason ( \( R \) ) is false.
(4) Assertion (A) is false but Reason (R) is true.
Assertion (A): Diatoms are the chief producers in the oceans.
Reason (R): After the death of Diatoms large amounts of cell wall deposits containing calcium are left behind and upon their accumulation over billions of years it is referred to as diatomaceous earth. Being gritty this soil is used in polishing, filtration of oils and syrups.
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