Larry thinks the necklace owned by Samantha is worth a million dollars . Larry offers a million dollars to Samantha for the necklace and she accepts. Later, Larry has the necklace appraised and learns it's worth only 10.000. Which one of the following is true ?

a- Larry can have the contract set aside bon grounds of mistake

b- Larry cant have the contract set aside on grounds of mistake

c- Samantha has the right to rescind the contract and have the necklace returned

d- Larry can have the contract set aside on ground of capacity.