Explain what action must take from the following error- when you go to measure the distance traveled by the spots and solvent, you discover that you didn't mark the solvent front before it dried.
a.) Run a fresh TLC plate identical to this one
b.) Outlook the solvent front and spots under UV light
c.) Presume the solvent front is at the top of the slide and measure from there
d.) Compute the capillary index for the solvent and multiply times the time needed for the plate to develop to determine where the front is located