_______（49）A.Although it may seem that everyone o

_______（49）

A.Although it may seem that everyone owns a smartphone these days,

B.if Apple offers a less expensive model of the iPhone later this year.

C.to customers who are making the switch to smartphones today.

D.who purchased a new mobile phone in the last three months,

E.The smartphone race is still raging.

F.If it works,why switch?