A rent$-$a$-$car company wants to increase the value ratio of its service by $15\%$ by the end of the current year. What would be the most appropriate course of action for this company? Increase both the perception of value and the rental costs by $15\%.$

Increase the perception of value by $15\%$ without changing the rental costs.

Increase the perception of value by $5\%$ percent while reducing the rental costs by $10\%.$

Reduce the rental costs by $15\%$ while not changing the perception of value.