With reference to Eutrophication, which of the following statement(s) is/are correct ?

1) It decreases dissolved oxygen of water.
2) It is a phenomenon of nutrient enrichment of a water body.

Select the correct answer from the codes given below.

A) 1 only

B) 2 only

C) Both 1 and 2

D) Neither 1 nor 2

This MCQ is part of the UP PSC Previous Year Questions (PYQs) series, focusing on UPPSC Prelims 2019 (GS Paper I)