The domain of the function f (x) = log2 log3 log4 x is

f (x) is defined if log3 log4 x > 0, log4 x > 0 and x > 0⇒log4⁡x>3∘=1,x>4∘ and x>0⇒x>41,x>1 and x>0⇒x>4Domain of f = (4, ∞).