A perpetual license is a one-time purchase that allows the software to be used indefinitely without recurring costs. This meets the requirement of a non-renewing, one-time capital expense. * Perpetual (Answer D): This is a one-time purchase and does not require renewal, making it ideal for capital expenditure. * Open-source (Option A): Open-source software is usually free but may not meet specific licensing requirements. * Subscription (Option B): This typically involves recurring payments, which contradicts the non- renewing expense requirement. * Volume (Option C): Volume licenses are used for purchasing multiple licenses at a discount but may still involve subscription-based renewals. CompTIA Server+ Reference:This topic is covered under SK0-005 Objective 2.1: Explain licensing concepts for software.