In system of Linear equations Ax=B, where A is m*n ,which of the following is/are true?
a:) If b=0, and m=n,then only trivial solution is possible.
b:) If b=0, and m=n,then always trivial solution is possible.
c:)If b=0,and m<n ,then always non-trivial solution possible.
c:)If b=0,and m<n ,then only non-trivial solution possible.
d:)If b=0,and m>n ,then only non-trivial solution possible.