Python Quiz - Looping the answer and try again.

Question

So for my homework I have to make a quiz in Python and I understand the basics but I want to know how I can loop back to the question if someone gets it wrong.
For example:
print("Question 1")
print("What does CPU stand for?")
print()
print("a. Core- Processing Unit")
print("b. Central Processing Unit")
print("c. Control Processing Unit")
if answer "c":
print("Incorrect, try again.")
How do I make it so it loops back to the question?

Answer 1

ans = input()
while ans != "b":
print("Incorrect, try again.")
ans = input()
or if you want to reprint the question as well:
ans = ""
while ans != "b":
print("Question 1")
...
ans = input()
if ans != "b":
print("Incorrect, try again.")