Study the given Venn diagram carefully and answer the question that follows.

The numbers in different sections indicate the number of pieces of furniture. How many chairs are there which are also cupboards but not tables?

Correct option is B

Given -

chairs are there  = 29+19+7+17

chairs are there which are also cupboards = common number of (chairs, cupboards) = 19 + 7

but not tables = extract the number of tables which is common in (19 + 7) = 19 + 7 - 7 = 19

Option B is correct.