I have created the following program in Python:

```
def tf_quiz(question, correct_ans):
    if input(question) == correct_ans:
        return("correct")
    else:
        return("incorrect")

quiz_eval = tf_quiz("Birds can fly", "T")

print("your answer is", quiz_eval)

```

However, my output is as following:

```
Birds can flyF
your answer is incorrect

```

But I want the following output:

```
(T/F) Birds can fly: F
your answer is incorrect

```

What do I need to change in my code?