Variant Derivation

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Product line model:

abstract xor Bluetooth
Bluetooth20 ?
Bluetooth21 ?
Bluetooth40 ?
abstract MobilePhone
Connectivity
`Bluetooth
GSM
LTE ?
[ LiBattery1400 ]
WiFi ?
USB ?
xor Battery
LiBattery1150 ?
LiBattery1400 ?
abstract LowEndPhone : MobilePhone
[ no WiFi ]
abstract HighEndPhone : MobilePhone
[ USB && WiFi ]
QuadCPU ?

Variant Configuration:

The customer requested WiFi, LTE, and Bluetooth. Carol proposed Bluetooth21.

Phone1 : MobilePhone
[ WiFi ]
[ LTE ]
[ Bluetooth21 ]

Trying a high-end phone:

Phone2 : HighEndPhone
[ LTE ]
[ Bluetooth21 ]
[ QuadCPU ]