Bar chart features and interpretation – UGC NET Question

A is correct because bar height/length represents magnitude. C is correct because relative heights show ranking even without exact labels. D is correct because clustered bars require a legend/key to identify series. B is false because bar charts can be horizontal. E is false because the encoded value is usually height/length, not width. Thus A, C and D only are correct.

Option A:
Option A is incomplete because it omits D, which is important for interpreting grouped/clustered bar charts.

Option B:
Option B is incorrect because it adds E, which wrongly claims bar width encodes the data value.

Option C:
Option C is wrong because it omits A, the fundamental definition of bar charts where bar height/length is proportional to value.

Option D:
Option D is correct because it combines the basic encoding rule, comparative interpretation and the need for a legend in clustered charts, while excluding B and E, which are incorrect.