microeconomics

Students are required to add the content to the following paragraph on the application of elasticity of demand.
If a seller knows the price elasticity of demand of his product it helps him in deciding if he can raise its unit price to make up for the newly introduced 10% commodity tax. Depending upon the elasticity there are three possibilities; one, he can pass the entire tax burden on to the consumers, two, he can pass the burden only partially, and three, he cannot pass the burden at all and will have to bear it by reducing the profit margin.

I didn't get this question. any help understanding