Which one of the following statements is false?

When the SARB wants to restrict the economy, it will increase the repo rate. This action is referred to as a contractionary monetary policy.

Economics is a study of scarcity and choices.

Opportunity cost refers to the alternative we are sacrificing when making a decision.

Higher inflation causes bracket creeping in that taxpayers are pushed into a lower tax bracket.

Higher inflation causes bracket creeping in that taxpayers are pushed into a lower tax bracket. (This statement is false. Higher inflation causes bracket creeping in that taxpayers are pushed into a higher tax bracket, not a lower one.)