Chase Bank issued a Guarantee for Sara needed in her business by an amount of $30,000 for a period of five months starts on March 1, the bank charged her insurance 25%, in addition to 1% commission and $20 stamps. Sara Guarantee has been modified to become $40,000 with extension for three months. What is the amount will be deducted from Sara account when guarantee modified? O a. 3,120 b. 10,120 O C. 2,545 d. 2,620