Which of the following is true of an exclusion of the implied warranty of fitness for a particular purpose?

The exclusion can be an oral or written statement, promise or other representation about the quality of a product.

The exclusion can occur by excusing buyers from examining the goods, the sample, or model.

The exclusion must be in writing, bold type, and be conspicuous.

Using expressions such as $"$as is$,"$ "with all faults," or some similar language would not exclude the implied warranty of fitness for a particular purpose.