The following passage is from the captureplanning.com website. It is an introductory paragraph and the first thing a viewer on the website will see. Who do you think the audience is for the passage? ( )In business proposal writing, the only opinion that matters is that of your customer's. If you want to know what to include in your proposal or how to best format a proposal, you need to look at it from the customer's point of view. Business proposal writing should answer any questions the customer has and explain the benefits of your approach. If you want to perfect your proposal writing, you need to first perfect your understanding of your customer. It's not about what you want to say or how well you can describe yourself; it's about what the customer needs to know in order to select the winner. Only after you master writing from the customer's perspective can you write a proposal that is the most effective. Some general advice for people who are new to business proposal writing is provided below...
选项：

A:Customers
B:Someone who is not familiar with writing business proposals
C:Business managers
D:Anyone who visits the website