The operators for the total angular momentum and its three projections are ĵ and ſx , îy, ,, respectively. the commutator between two operators a and ể is [a, b] = âb - bâ. which of the following is true? (a) [j? , z]=0 () [,] = ini, (c) (1, ] = 0 (d) [1,1,] = ini, (e) [3, + i), j) = 0