Perform the following lag operations:A. LY_(t)=B. Lc=C. L^(2)Y_(t)= d. L^(k)Y_(t)= for some integer k>0 e. Y_(t)-LY_(t)= f. Y_(t)= Which of the following represents the lag operation for a stochastic process Y_(t)? a. LY_(t) b. Lc c. L^(2)Y_(t) d. L^(k)Y_(t)