Which is NOT the microeconomic statement?

Question $19$ options:

a$)$

The price of wheat declined by $5\%$ in Canada last year

b$)$

GDP increased by $1\mathrm{.}8\%$ in Canada last year

c$)$

The cost of production in the mining industry has recently declined

d$)$

The profits of The Canadian Corporation last year were $$25$ million.