Segment disclosure by Apple Inc. (AAPL) provides sales information for its major product lines for three recent years as follows (in millions):

The Wearables, Home Accessories segment includes Airpods, Apple Watch, and Apple TV.
The Services segment includes sales from iTunes Store, App Store, Mac App Store, TV App Store, iBooks Store, Apple Music, AppleCare, and Apple Pay.
a. Which product line had the greatest percentage of Year 3 sales? Which product line had the least percentage of Year 3 sales? Round to the nearest whole percent.
b. For Year 3, which product line grew the most as a percentage of Year 1 sales?

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Segment iPhone Mac iPad Wearables, Home Accessories Services Total Year 3 $137,781 28,622 23,724 30,620 53,768 $274,515 Year 2 $142,381 25,740 21,280 24,482 46,291 $260,174 Year 1 $164,888 25,198 18,380 17,381 39,748 $265,595