下列哪段代码可以计算出斐波那契数列的第5项（F(5)）?

# A.

a, b = 0, 1for _ in range(4):

a, b = b, a + bprint(a)

# B.

a, b = 0, 1for _ in range(5):

a, b = b, a + bprint(a)

# C.

a, b = 0, 1for _ in range(5):

a, b = b, a + bprint(b)

# D.

a, b = 0, 1for _ in range(4):

a, b = b, a + bprint(b)