-----
foo 10
    A is  $"10"
    C is  ""
-----
10 ', 100
    A is  $"10"
    C is  ""
-----
foo 10 ', 
    A is  $"10"
    C is  ""
-----
foo 10 ', asdasd
    A is  $"10"
    C is  ""
-----
foo 10 ', foo
    A is  $"10"
    C is  ""
-----
foo 10 'foo
    A is  $"10"
    C is  ""
