Which of the Following Are Correct?
A) $F _ { N }$

Which of the following are correct?

A) $F _ { N }$ (j / k) = $\frac { F _ { N ^ { ( \$ / j ) } } } { F _ { N ^ { ( \$ / k ) } } }$
B) $F _ { N }$ (j / k) = $\frac { F _ { N ^ { ( k / S ) } } } { F _ { N ^ { ( j / S ) } } }$
C) $F _ { N }$ (j / k) = $\frac { F _ { N } ( j / \$ ) } { F _ { N } ^ { ( k / \$ ) } }$
D) all of the options