Which method must clear the pixels in the specified rectangle that also intersects the current clipping region to a fully transparent black, erasing any previous image?

Which method must clear the pixels in the specified rectangle that als

1.	Which method must clear the pixels in the specified rectangle that also intersects the current clipping region to a fully transparent black, erasing any previous image?
A.	strokeRect(x, y, w, h)
B.	clearRect(x, y, w, h)
C.	fillRect(x, y, w, h)
D.	removeRect(x,y,w,h)
Answer» C. fillRect(x, y, w, h)