Among the following the number of compounds which will give positive iodoform reaction is _____.

(a) $1$-Phenylbutan-$2$-one

(b) $2$-Methylbutan-$2$-ol

(c) $3$-Methylbutan-$2$-ol

(d) $1$-Phenylethanol

(e) $3, 3$-dimethylbutan-$2$-one

(f) $1$-Phenylpropan-$2$-ol

Iodoform test is used to check the presence of carbonyl compounds with the structure $\mathrm{R}-\mathrm{CO}-{\mathrm{CH}}_3$ or alcohols with the structure $\mathrm{R}-\mathrm{CH}\left(\mathrm{OH}\right)-{\mathrm{CH}}_3$ in a given unknown substance. The reaction of iodine, a base and a methyl ketone gives a yellow precipitate along with an “antiseptic” smell.

Hence, (c), (d), (e) and (f) give iodoform reaction