20. A company forfeited 10 000 shares that had been paid to $2 but on which a $1 call was outstanding. The company's constitution provided for any surplus on reissue to be returned to the forfeiting shareholders. The forfeited shares were reissued as paid to $4.00 for a payment of $3.50 per share. Costs of reissue amounted to $2000. The amount of the surplus repaid to the shareholders whose shares were forfeited is: a. $15 000. *b. $13 000. c. $10 000. d. $38 000