單項選擇題無脊椎動物的神經(jīng)發(fā)展為（）
A.無神經(jīng)—梯神經(jīng)—索式神經(jīng)—鏈狀神經(jīng)
B.無神經(jīng)—網(wǎng)神經(jīng)—梯神經(jīng)—索式神經(jīng)—鏈狀神經(jīng)
C.無神經(jīng)—索式神經(jīng)—網(wǎng)神經(jīng)—鏈狀神經(jīng)
D.無神經(jīng)—梯神經(jīng)—鏈狀神經(jīng)
