Which of the following statements is not true about forward phase in backpropagation in neural network?

a$.$

The neurons are activated in sequence from the input layer to the output layer

b$.$

Applying each neuron$$s weights and activation function from the input layer to the output layer

c$.$

Applying each neuron$$s weights and activation function from the output layer to the input layer

d$.$

Upon reaching the final layer, an output signal is produced