请选择ABCD2Q3a:[*z/[4P0D8\ _______ great fun it is to go boating in such fine weather !1|1[3A;o5^9E5C+w(h*A6h6]
A. What1|1[3A;o5^9E5C+w(h*A6h6]
B. How1|1[3A;o5^9E5C+w(h*A6h6]
C. What a1|1[3A;o5^9E5C+w(h*A6h6]
D. How a1|1[3A;o5^9E5C+w(h*A6h6]