Which form is designated for FICA and FITW taxes?

The correct choice is B, which refers to Forms 941 and 944. Form 941, the Employer's Quarterly Federal Tax Return, is specifically designed for reporting federal income taxes withheld from employees' wages (FITW), as well as Social Security and Medicare taxes which are part of the Federal Insurance Contributions Act (FICA). Employers use this form to report their payroll tax obligations on a quarterly basis.

Form 944 serves a similar purpose but is intended for smaller employers with a lower annual payroll tax liability, allowing them to file on an annual basis instead of quarterly. Both forms are critical for ensuring that an employer is compliant with federal payroll tax reporting requirements.

The other forms mentioned do not pertain to the reporting of FICA and FITW taxes. For instance, Form 940 is used for reporting federal unemployment taxes (FUTA), while Form 945 is utilized for reporting income tax withheld from nonpayroll payments. Form 1040 is an individual tax return form for reporting personal income and is not related to employer payroll tax obligations. Therefore, Forms 941 and 944 are the appropriate forms for reporting FICA and FITW taxes.