user
I can talk, but i have no feet, I am very useful,but sometimes hard to get, your fried might have me, so will bussiness people  What am I??
A: title
B: cover
C: sewing machine
D: native
E: cell phone 
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

E

<|end_of_solution|>