Five statements are given below, labelled a,b,c,d and e. Among these, four statements aer in logical order and form a coherent paragraph/passage. From the given options, choose the option that does not fit into the theme of the passage.

Options

A. Much of the modern use of metals happens behind closed doors of corporations, under the veil of trade secrets.
B. He chooses to restrict his analysis to matals and metalloids, which could face more critical constraints because many of them are relatively rare.
C. Even if we can find out how certain metals are used, it may not always be possible to determine the proportions they are used in.
D. The authors compromise was to account for the use of 80% of the material that is made available each year through extraction and recycling.

Answer

B

Explanation

Option (b) is odd one out, all other options describes the modern users of metals while option (b) is related to analysis of metals.