At What Frequency Does A $10 - \mu \mathrm { F }$

Multiple Choice

At what frequency does a $10 - \mu \mathrm { F }$ capacitor have a reactance of $1200 \Omega$ ?

A) $42 \mathrm {~Hz}$
B) $83 \mathrm {~Hz}$
C) $13 \mathrm {~Hz}$
D) $60 \mathrm {~Hz}$