What is the cross over frequency at which higher video frequencies are emphasized prior to modulation at the transmitter and de-emphasized at the receiver in NHK broadcast?

What is the cross over frequency at which higher video frequencies are

1.	What is the cross over frequency at which higher video frequencies are emphasized prior to modulation at the transmitter and de-emphasized at the receiver in NHK broadcast?
A.	5.2 MHz for Y, 1.6 MHz for C
B.	6.2 MHz for Y, 3.6 MHz for C
C.	9.5 MHz for Y, 6.6 MHz for C
D.	7.5 MHz for Y, 0.3 MHz for C
Answer» B.