Given below are two statements followed by two conclusions. Assuming these statements to be true, decide which one logically follows.
$A \implies B$ and $B \implies C$ means $A \implies C.$ So All film directors are playback singers.
Conclusion 2 is also true as even if one film director exist, he must be a film star. (We have to assume domain sets to be non-empty here)
Correct Answer: Option D
Please tell the method of how to draw venn diagrams for solving such problems