In which of the following cases did the Supreme Court of India discuss the issue of 'creamy layer' among backward classes?

Explanation

In the Indra Sawhney vs. Union of India case, the Supreme Court ruled that for the purpose of reservation, backward classes can be classified into 'backward classes' and 'more backward classes'. Identifying the creamy layer (more affluent section) within the backward classes is necessary for this classification. Therefore, option (b) is correct.