Tara,an Agent,enters into a Contract on Behalf of Sue to Buy

Tara,an agent,enters into a contract on behalf of Sue to buy 100 pencils for $1 each and 100 pens for $2 each.Sue determines that Tara got a good price for pencils but made a poor deal on pens.Sue indicates she wishes to ratify only the agreement to buy pencils.Has Sue acted properly?

A) Yes,because Sue is free to ratify or not ratify any part of the contract.
B) Yes,but only if Tara had legal capacity at the time of contracting
C) No,because a principal must ratify an entire contract,not just the favorable parts.
D) No,unless Tara had express authority to bind Sara to both contract terms.