Let `f:RrarrR` is a function satisfying `f(2-x)=f(2+x)` and `f(20-x)=f(x),``forall``x``inR.`
Answer the following question:

(1) If `f(0)=5`, then minimum possible number of values of `x` satisfying `f(x)=5,` for `x``in[0,170]` is-
(1) `21`
(2) `22`
(3) `11`
(4) None of these

(2) Graph of `y=f(x)` is-
(1) symmetrical about `x=18`
(2) symmetrical about `x=5`
(3) symmetrical about `x=10`
(4) symmetrical about `x=20`