Tax on the father's death amount received by mother

Hi Experts

During AY2021-22 after my father's death, my mother has received following three:-

a) One lump-sum payment of 15L from father's pension policy

b) 5L from LIC policies of father

c) Receiving Rs. 2000 monthly pension from another of his policy.

My mother is filling her own ITR-1 for AY-2021-22.

Can you pls let me know

(i) Are all the above three i.e. a), b) and c) to be filled/declared in ITR-1?

(ii) If yes, then are these to be mentioned as Exempt Income? Which specific sections to be used for these three under Exempt income?

Thanks and regards.