请选择ABCD'@*m'\4b I saw _____ boy walking across _____ street today.6I-e(K3J5z8w
A. a, a6I-e(K3J5z8w
B. the, the6I-e(K3J5z8w
C. a, the6I-e(K3J5z8w
D. the, a6I-e(K3J5z8w