A pattern is created by painting some squares on a $4 \times 100$ grid paper. In this pattern, the squares in columns corresponding to integer multiples of 2 in row A, integer multiples of 3 in row B, integer multiples of 4 in row C, and integer multiples of 5 in row D are painted.
According to this, in how many of the columns in this pattern are the squares in rows A and D painted, while the others are unpainted?\\
A) 3\\
B) 4\\
C) 5\\
D) 6\\
E) 7