Matthew sold $200$ shares of Xerox stock on

December $23,20$X$1.$ The stock had a basis

of $$4,000$ and was sold for $$2,100.$ When

Matthew funds his IRA on January $3,20$X$2,$

he causes the IRA to purchase $400$ shares of

Xerox for $$4,000.$ Can Matthew deduct the

loss on the sale of the Xerox stock?