Answer: The firm is experiencing diseconomies of scale.
Explanation:
In economics, diseconomies of scale are cost disadvantages that economic agents such as individuals, firms and governments accrue as a result of an increase in the output or organizational size resulting in the production of goods and services at an increased per-unit-costs.
Diseconomies of scale in businesses lead to an increase in the business average costs as the business grows. Regarding the question, while resources are increased by 10%, output increased by less than 5% shows diseconomies of scale since there's increase in the cost.