P said to Q: "You are as old as R was when I was twice as old as S and will be as old as Twas when he was as old as R is now". Q said to P:
"You may be older than U but V is as old as I was when you were as old as V is, and S will be as old as U was when U is as old as V. 

Who is the eldest?

A

p

B

Q

C

R

D

s

E

T