Step 1: Understanding the Concept:
This question explores the economic definitions of production factor rewards, specifically profit (reward for entrepreneurship) and interest (reward for capital).
Step 2: Detailed Explanation:
Let us evaluate both statements:
- Statement (I): Profit is the difference between total revenue and total cost.
An enterprise can make a surplus (positive profit) or incur a loss (negative profit) depending on market conditions.
Therefore, profit can indeed be positive or negative, making Statement (I) true.
- Statement (II): In classical economic theory, interest is the price paid for using capital.
Since capital is a scarce resource with alternative uses, the nominal interest rate must be positive to incentivize lenders.
No rational lender would lend money for a negative nominal return when they could simply hold cash.
Thus, under classical economic principles, interest cannot be zero or negative, making Statement (II) true.
Therefore, both statements are true.
Step 3: Final Answer:
Both Statement (I) and Statement (II) are true, corresponding to option 1.