If f(x) = 5^{√(4x2-1)} . Which of the following are true / False ?

i. The domain of f(x) is |x| ≥ 1/2

ii. The range of f(x) is y ≥ 1

iii. The graph of f(x) is symmetric about the y-axis.

iv. The graph of f(x) never decreases

(A)TTTT

(B) TFTF

(C) TTTF

(D) TFTT