如果输入，我找不到错误

Question

这段代码有什么问题？我可以输入（输入）我想要的任何内容，并打印出“Nice”。

print ("Hi and welcome to our online shop.\n\nWhich fruit would you like to buy? Apple, Banana or Strawberry?")

x = input()

if x is "Apple" or "apple":
    print ("Nice.")

elif x is "Banana" or "banana":
    print ("Great.")

elif x is "Strawberry" or "strawberry":
    print ("Cool.")

else:
    print ("Please enter a avaliable product")

这是我的第一个代码，所以这可能是一个小错误。 谢谢你的答案。