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Answer:
C, proprietary software
Explanation:
Proprietary software, also known as non-free software, is computer software for which the software's publisher or another person reserves some rights from licensees to use, modify, share modifications, or share the software. It sometimes includes patent rights.
<span>Customer Relationship Management is really important for many businesses, in particular, small ones, as it is the focus point of sales and marketing strategies. At the centre of a business’ CRM is their customer database, which is a really helpful tool enabling them to; identify customer trends, create customer loyalty and increase their customer communication. All businesses have a customer database, whether it is a computerised system or a piece of paper with names and details written on. Here are some tips on how to create and maintain your database in order to get the most out of it.</span>
