The correct option is
A 1008
Let's find the LCM of given number using prime factorization method
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1265446/original_Untitled_drawing_-_2021-07-29T203005.011.png)
The highlighted numbers represent the common factors among the given number. Hence, Prime factorisation of LCM of 18, 28 and 48 is
2 × 2 × 2 × 2 × 3 × 7 × 3 = 1008.