Given h(x)=2√{x-5} which of the following statements describes h(x)
a. The function h(x) is increasing on the interval (-[infinity],5)
b. The function h(x) is increasing on the interval (5,[infinity])
c. The function h(x) is decreasing on the interval (-5,[infinity])
d. The function h(x) is decreasing on the interval (-[infinity],-5)