If P : Q = 10 ∶11 and Q ∶ R = 11 ∶ 12, then P + Q ∶ Q + R ∶ R + P is:

A

21 ∶ 23 ∶ 22

B

22 ∶ 21 ∶ 23

C

11 ∶ 12 ∶ 10

D

23 ∶ 22 ∶ 21