已知如下两段Python代码：

# 代码1
nums = [1, 2, 3, 4]
for num in nums:
    num *= 2
print(nums)

# 代码2
fruits = ["apple", "banana", "cherry"]
for index, fruit in enumerate(fruits):
    fruits[index] = fruit.upper()
print(fruits)

请结合代码判断下列选项的正确性：