Consider the piecewise defined function √−x,if x<0 0,if 0≤x≤4x−4,if x>4. Choose the answer which best describes the continuity of this function-
A. the function is continuous on the entire real line
B. the function is unbounded and therefore cannot be continuous
C. the function is right continuous at x=0
D. the function has a removable discontinuity at 0 and 4, but is continuous on the rest of the real line