$1.$ For a ranking classifier, if you lower the cutoff value $($i$.$e$.,$ the threshold of positive$-$class membership probability$)$ from $0\mathrm{.}8$ to $0\mathrm{.}5,$ which of the following is expected to increase?

a$)$ accuracy

b$)$ precision

c$)$ recall

d$)$ none of the above