Ivanhoe Ltd. purchased several intangible assets, as follows The following information is also awailable: - In addition to the costs listed above, there were legal fees of $13,400 associated with the licence acquisitions. The licences are valid in perpetuity, and sales of the praducts produced under the licences have been strong and are expected to cantinue at the same level for many decades. - The customer lists are expected to be useful for the next sixyears. - The patent has a legal life of 20 years, but technological changes are expected to render it worthless after about 8 years. - The capyright is good for another 40 years, but nearly all the related sales are expected to occur during the next 10 years (a) Calculate the annual amortization expense, if any, that should be recorded for each of these intangible assets, assuming the straight-line method is appropriate. (Do not leove any answer field blank. Enter Ofor amounte]