Hysteresis loops for two magnetic materials A and B are given below : These materials are used to make magnets for electric generators, transformer core and electromagnet core. Then it is proper to use :

Question

$\begin{array}{1 1} (1) \text{A for electric generators and transformers.} \\ (2) \text{A for electromagnets and B for electric generators} \\ (3) \text{A for transformers and B for electric generators} \\(4) \text{B for electromagnets and transformers} \end{array} $