Consider the below given neural network design configuration is valid. The below DNN has one output layer, two hidden layers, and one input layer. $15$ neurons are present in the input layer $($excluding the bias neuron$),30$ neurons are present in the first hidden layer, $25$ are present in the second hidden layer $($excluding the bias neuron$),$ and $6$ neurons are present in the output layer. How many total weights exist in this DNN if every neuron is fully connected to the neurons in the adjacent layers considering the bias weights to the respected connected layer? The neuron b is the bias neuron.

Find the correct answer choices

$1368$

$1386$

$1350$

$1378$