请选择DCBA2i8K0k4A'j4u9W.R-O3P2C0z*J He tried many times to sneak across the border to a neighboring country，_________ caught each time.)K4Y(U5Q3Q
A.having been)K4Y(U5Q3Q
B.only to be)K4Y(U5Q3Q
C.always being)K4Y(U5Q3Q
D.unfortunately)K4Y(U5Q3Q