What is the difference between a bachelors of science in economics and abachelors of arts in economics?

Generally when one has mathematics, statistics or other science related subject as subsidiary subject with the economics honours paper, then it is B Sc. in economics and when one has geography, English or other arts subject with economics it is B.A. in economics. Though the degree provided, can also depend on the university, such as, with mathemics Calcutta University gives B. Sc. degree but Visva-Bharati University gives B. A. degree for Economics.