This process should be used as a last resort. Example: bees are attacking a human or family pet. Class ___ foam solution at concentrations of ____ to ___ should be applied using a fog nozzle to airborne bees. Active beehives should be handled by professional beekeepers or pest control specialists. What is the missing class and concentration range for applying foam solution to airborne bees?
1) Class A, 1% to 5%
2) Class B, 5% to 10%
3) Class C, 10% to 15%
4) Class D, 15% to 20%