1. However , its cargo of 267 tons of solid copper ingots was extensively salvaged in 1917 by Gregory James Busch , and again in 1974 by Benjamin F. Leavitt .
2. Its cargo of 267 tons of solid copper bars was however extensively rescued in 1917 by Benjamin F. Leavitt and in 1974 by Gregory James Busch .

Select your answer from the options. Are these two sentences paraphrases of each other?
Select from the following.
(a). no;
(b). yes;...I think the answer is
(a).