Cobb gave Garson a signed check with the amount payable left blank. Garson was to fill in, as the amount, the price of fuel oil Garson was to deliver to Cobb at a later date. Garson estimated the amount at $700, but told Cobb it would be no more than $900. Garson did not deliver the fuel oil, but filled in the amount of $1,000 on the check.

Garson then negotiated the check to Josephs in satisfaction of a $500 debt with the $500 balance paid to Garson in cash.

Cobb stopped payment and Josephs is seeking to collect

$1,000 from Cobb. Cobb’s maximum liability to Josephs will be

a. $0

b. $ 500

c. $ 900

d. $1,000