Please indicate the correct statement among the following. To be patentable:

Select one:

An invention should be known by the majority of experts in the field [c]An invention must be novel, be discovered by an expert, and be industrially applicable [e]An invention must be innovative, involve an inventive step, and be practicable [b]An invention must be new, involve an inventive step, and be known by experts [a]An invention must be novel, involve an inventive step, and be industrially applicable [d]