calculating the lowest value in a row of pricing

i have a row of pricing.

A2, B2, and C2. (and column headings)

I want to put in a formula to take the lowest value and put it into D2. I would also like to take the column heading from the relevant column and put it into E2.

The difficulty is I am working through a spreadsheet with over 5000 lines in it.

Please can you help.

Thanks

Mark Fryer