Using the points on the diagram below, identify which combinations of these points illustrate diminishing returns to capital. Give a brief explanation to support your answer. 
Definitions:
Cell Division
The process by which a parent cell divides into two or more daughter cells, crucial for growth, repair, and reproduction in organisms.
Anatomical Direction
Terms used to describe the locations and orientations of structures within the body relative to other structures or locations, such as anterior, posterior, superior, and inferior.
Inferior
Anatomical term meaning below or closer to the feet; also called caudal.
Chemical Reactions
Processes that involve the rearrangement of molecular or ionic structure of substances, resulting in the formation of one or more new products.
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