Benzenediazonium chloride couples with each of the following under suitable conditions. Select the pairs in which the stated major product is correct.

A4-methylphenol, alkaline: azo group para to $OH$
B2-naphthol, alkaline: 1-(phenylazo)-2-naphthol
Cphenol, alkaline: 4-hydroxyazobenzene
DN,N-dimethylaniline, pH 4-5: azo group ortho to $N (CH X_{3}) X_{2}$ as the major product

Answer: B, C

Phenoxide couples para, giving 4-hydroxyazobenzene, and 2-naphthoxide couples at C-1. In 4-methylphenol the para position is occupied by

CH X_{3}

, so the azo group goes ortho to

OH

. In N,N-dimethylaniline the free para position is preferred over the hindered ortho position.