What does $z_5^{[3]}$ represent in a $6-$layer deep neural network $($layer indexing starts

from $0$ and node indexing starts from $1)?$

The raw score calculated by the $5^{th}$ neuron in hidden layer $2$

The raw score calculated by the $4^{th}$ neuron in hidden layer $5$

The raw score calculated by the $3^{rd}$ neuron in hidden layer $5$

The raw score calculated by the $5^{th}$ neuron in hidden layer $3$