An Input mask controls what can and cannot be entered in a field

The balance factor of x, written bf(x), is defined by ____.

A. bf(x)= xl - x1 B. bf(x)= x1 - xh C. bf(x)= xh - x1 D. bf(x)= l(xh) - l(x1)

All attempts to access text files should be enclosed inside if...else blocks to check forexceptions.

Answer the following statement true (T) or false (F)