In an FM Stereo Receiver, What Is the Purpose of the Matrix

Multiple Choice

In an FM stereo receiver, what is the purpose of the matrix network?

A) to filter out the L-R signal at the output of the discriminator
B) to produce separate L and R signals from the L+R and L-R signals
C) to filter out the SCA signal at the output of the discriminator
D) to filter out the L+R signal at the output of the discriminator