Though the "curds and whey" of the nursery rhyme sounds exotic or old-fashioned, they are likely to be something similar to cottage cheese.

A. they are likely to be something similar to cottage cheese

B. they are likely to be similar to cottage cheese is

C. it is likely to be similar to cottage cheese

D. it is likely to be something similar to cottage cheese

E. it is likely to be similar to what cottage cheese is