How to use "AND" "OR" in Python's input function?

Question

This is error why?
A = input("Enter 1 neighbouring planet of earth")
if A =="Venus" or "Mars":
print ("Congratulations you are right")
else:
print("Sorry you are wrong")

Answer 1

if A =="Venus" or A=="Mars":

Answer 2

There’s a correction in if statement:-
if A==“Venus” or A==“Mars”:

Answer 3

Really? I’ve ran this program successfully...