Identify the applicable accounting convention for the following business scenario and explain your choice

Randolph, Inc., has experienced major turnover in its accounting department, and the new head of accounting has been going through the current records of transactions. A couple of those transactions appear problematic. The first contains an error of $10,000 that the previous accountant decided was not large enough to adjust before the financial statements were prepared. This error would understate income and make the company look more profitable than it actually is