Scarborough’s Department Store opens for business on a busy shopping day just before Christmas. A hurried clerk places a sign in the middle of a table piled high with red cashmere sweaters. The sign reads, “SALE—100% Cashmere— $0.99. Each.” The sign, of course, was supposed to read “$99 each.” This is a _______________ mistake, and customers _______________ be able to demand that Scarborough’s sell the sweaters for 99 cents.
(a) Unilateral; will
(b) Unilateral; will not
(c) Mutual; will
(d) Mutual; will not