Identify search terms that you might use to research the following issues. Then, identify the browse path $($down to the section$)$ you would likely use to navigate to guidance for these issues $($example of a browse path: Assets$-$ Inventory$-$Overall$-$Initial Measurement$).$

a$.$ An airline has incurred significant cost to update the interior of its aircraft, changing the configuration of seats and overhead storage space $($these parts are considered part of the airframe$).$ The airline must determine whether these costs shall be charged to expense or capitalized.

b$.$ A company$$s auditor is questioning the appropriateness of the company$$s healthcare cost growth rate assumption, which it uses to measure its defined benefit post$-$retirement medical benefits obligation.

c$.$ A popular website primarily generates revenue through ad sales. Ad buyers must pay a specified cost per click, and this cost is based on agreed$-$upon terms between the website and ad buyer. The typical term of an advertising arrangement is approximately one month with billing generally occurring after the delivery of the advertisement. The website must estimate the revenues it has earned but not yet collected as of the end of the period.

d$.$ A company purchases marketable equity securities and holds the securities in a brokerage account. The company must determine how to initially measure this investment.