Which of the following is a kind of competitive advantage from the product implementation perspective?$$

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Toyota develops a new auto$-$painting system to reduce the operating expenses on car painting$$

ParknShop introduce a new membership system to store virtual points. Member can use those points for shopping in ParknShop.$$

Walmart requests their suppliers to use the same brand of Enterprise Resources Planning system to facilitate the process of procurement.$$

Apple introduces a new iPhone with rear dual camera and selfie features.$$