Verdant Avionics makes aircraft instrumentation. Their basic navigation radio requires $130 in variable costs and requires $3,000 per month in fixed costs. If it processes the radio further to enhance its functionality, it wil require an additional $40 per unit of variable costs and $400 per month in fixed costs, The marketing manager believes the sales price of the radio can be increased from $260 to $290. In making this decision, the amount of additional fixed costs per month is a relevant O True O False