Use the following to answer questions :
Figure: Production Possibility Frontier Curve for Tealand 
-(Figure: Production Possibility Frontier for Tealand) Look at the figure Production Possibility Frontier for Tealand. Tealand is producing at point C on its production possibility frontier. What is the opportunity cost of increasing the production of tea from 20 million cups to 30 million cups?
Definitions:
Grammar
All of the methods—word order, verb forms, and so on—that languages use to communicate meaning, apart from the words themselves.
PIRLS
An international assessment measuring the reading comprehension skills of fourth-grade students worldwide.
International Test
Examinations administered across various countries to assess and compare educational systems or cognitive skills on a global scale, such as PISA or TIMSS.
Reading
The process of understanding written text through the interpretation of written or printed symbols.
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