$(40$pts$)$ The following chart shows the quantity of exported fruits each month.

However, it is a bad example of data visualization. Analyze and redesign it$.$

a$.(10$pts$)$ What is its data? types of data?

b$.(5$pts$)$ How did the author use marks and channels to encode the data?

c$.(10$pts$)$ The visualization has many problems, describe them.

d$.(15$pts$)$ Redesign it$.$