There are two statements marked as Assertion (A) and Reason (R). Mark your answer as per the options given below.

Assertion (A):  Calls made but the amount is not received from the shareholders are Calls-in-Arrears and is always transferred to Calls-in-Arrears Account and are shown under Shares Subscribed but not Fully Paid-up as a deduction in the Note to Accounts on Share Capital.
Reason (R):  Amount not received against Calls are Calls-in-Arrears but it is not always transferred to Calls-in-Arrears Account. It can be kept in the respective Call Accounts as receivable. However, the amount received is shown under Shares Subscribed but not Fully Paid-up as Deduction.

Assertion (A) is correct but the Reason (R) is not correct.

Calls in Arrears: It may happen that shareholders do not pay the call amount on due date. When any shareholder fails to pay the amount due on allotment or on any of the calls, such amount is known as ‘Calls in Arrears’/‘Unpaid Calls’. Calls in Arrears represent the debit balance of all the calls account. Such amount shall appear as ‘Note to Accounts'.