Draw Fischer projection formulas for the following moelcules:

Strategy: By convention, Fisher projections are written with the main carbon chain extending from top to bottom and with all groups esliped. in the Fischer formula, the chiral carbon is not drawm, it is at the crossing of a horizontal and a vertical line. The horizontal lines represent bonds that project out of the plane of the paper, towards the viewer, and the vertical lines represent bonds that project behind the plane of the paper, away form the viewer

Explanation

(a)
(b)
(c ) Tip the `CH_(2)OH` back so that `CH_(3)CH_(2)` and `CH_(2)OH` ar behind the plane with the project in front of the paper on the horizontal, the `CH_(3)` to the right and `H` to the left of the viewer.