Given: $${E_{px}} = \frac{{{\text{Percentage change in }}{{\text{Q}}_y}}}{{{\text{Percentage change in }}{{\text{P}}_x}}}$$
The above relationship is:

A. Bonus theory B. Normative theory C. System theory D. Accounting theory

A. Accounting Theory B. Pricing Decision, Policies and Practices C. Capital Management D. Profit Management

A. 1, 2 and 3 B. 2, 3 and 4 C. 1, 2 and 4 D. 1, 3 and 4

A. Profit management B. Accounting theory C. Pricing policies D. Production analysis