Consider each of the below cases and statements. For each statement, what is a key economic consideration and why? a) 'In Belgium, there are two national telecom providers: Proximus and Orange. In the Northern region of Flanders there is also Telenet, and in the Southern region of Wallonia there is also VOO. Suppose Telenet and VOO want to merge. As they are not competing for the same customers, the relevant market can be defined regionally. b) 'RTL and Talpa are in the business of selling TV advertisement space. However, they also provide TV content to viewers. For all practical purposes, these markets can be considered in isolation in any review of a merger between RTL and Talpa.' c) 'Because the price of fresh farmed salmon from Norway closely tracks the price of fresh farmed salmon from Scotland, both are in the same relevant market.' d) 'Razor blades for the Phillips OneBlade-a hybrid razor that you can use to trim and shave your beard with one device-cost up to 15 per piece. There is however no separate aftermarket for these blades if increasing prices with 5-10% is unprofitable.