Whatismostimportantwhenlaunchingnewproducts,flankerbrandsextensionsofwell-knownbrands,orinfrequentlypurchasedbrands;orgoingafteranundefinedtargetmarket.（）
A
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Whatisagenerallyacknowledgedasthemostpowerfuladvertisingmediumandreachesabroadspectrumofconsumers.（）
Forexample,itisestimatedthatSASturnoverrateis4percentcomparedtotheindustrynormofmorethan20percentperyear.