how to put/get a matrix from array

hi guys. i have 4 matrixes. i put them in a array. now i want to get the nth matrix from this array. i used B(1) (forexample) but it gives me [2×2 double].

plz help me. how i can get the nth matrix ?

s0=[1 0;0 1];
sx=[0 1;1 0];
sy=[0 -1i;1i 0];
 sz=[1 0;0 -1];
B={s0 sx sy sz};

Answer 1

[KALYAN ACHARJYA]

B{1}

Do call other cell array in simillar ways.