The concept of materiality:

a Treats as material only those items that are greater than 2% or 3% of net income.

b Justifies ignoring the matching principle in certain circumstances.

c Affects only items reported in the income statement.

d Results in financial statements that are less useful to decision makers because many details have been omitted.

The correct answer is letter "B": Justifies ignoring the matching principle in certain circumstances.

Explanation:

In Accounting, the materiality principle is in charge of the relevance of information and the size of the information recorded in the companies' books.   According to this concept, there are some Generally Accepted Accounting Principles (GAAP) that can be omitted as long as the information transferred to the Financial Statements are not affected.

It is the responsibility of the accountant to determine what should and should not be included on the firm's general ledger, then. GAAP such as matching can be omitted thanks to the materiality principle.