Consider Having Three String Variables A, B, and C

Multiple Choice

Consider having three String variables a, b, and c. The statement c = a + b; also can be achieved by saying

A) c = a.length( ) + b.length( ) ;
B) c = (int) a + (int) b;
C) c = a.concat(b) ;
D) c = b.concat(a) ;
E) c = a.plus(b) ;