EN 50131-5-3 Grade 3 implementation in CC1310

Hi

According to EN 50131-5-3 standard , in order to meet Grade 3 Sub 1GHz security system it needs Transceiver with Dual band support (like 868 and 433 MHz).Right?

The questions about Dual band implementation in CC1310 is as follow:

1. Does CC1310 meet EN 50131-5-3 Grade 3? What needs for that?
2. Could CC1310  transmit & receiving in two separate bands such as 868 and 433  to  overcoming the interfering signals (Immunity to interference section 4.4 of EN 50131-5-3 ------> 10v/m)?
3. Which selectivity required from our line up receiver (external SAW filter) to meet immunity to interference requirement 10v/m?
   

Regards

Roni