Strange show

[Michael Lin]

Given a TextArea using a proportional pitch font and constructed like this:
TextArea t = new TextArea("12345", 5, 5);
Which statement is true?
A. The displayed width shows exactly five characters on each line unless otherwise constrained.
B. The displayed height is five lines unless otherwise constrained.
C. The maximum number of characters in a line will be five.
D. The user will be able to edit the character string.
E. The displayed string can use multiple fonts.
Answer: B, D
I thought the answer should be a, b, c, and d,
why the problem with a, c??
Thanks!

[Warren Bell]

A. The displayed width shows exactly five characters on each line unless otherwise constrained. // Wrong, proportional pitch font depends on the character.
C. The maximum number of characters in a line will be five. // Wrong, proportional pitch font depends on the character.
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Warren Bell