In the following circuit, the reading of the ammeter will be: (Take Zener breakdown voltage \( = 4 \, \text{V} \))
\( 80 \, \text{mA} \)
\( 60 \, \text{mA} \)
\( 24 \, \text{mA} \)
\( 10 \, \text{mA} \)