Which statement about the drawing techniques leonardo da vinci michelangelo, and vincent van gogh used in artworks are true?

choose all the answers that are correct

1.leonardo used the sfumato technique of blending and blurring chalk so edges nearly dissapear

2.michelangelo used the hatching technique of drawing parallel line close together

3.van gogh used a variety of expressive strokes to create different surfaces and textures.

4.van gogh used the cross-hatching techniques of filling certain areas by tiny dots to create value.