21. The prime lending rate is a key rate in the economy: not only are the interest rates on most loans to small and medium-sized businesses tied to the prime, but also on a growing number of consumer loans, including home equity loans.
(A) not only are the interest rates on most loans to small and medium-sized businesses tied to the prime, but also on
(B) tied to the prime are the interest rates not only on most loans to small and medium-sized businesses, but also on
(C) the interest rates not only on most loans to small and medium-sized businesses are tied to the prime, but also
(D) not only the interest rates on most loans to small and medium-sized businesses are tied to the prime, but also on
(E) the interest rates are tied to the prime, not only on most loans to small and medium-sized businesses, but also

B