Under Section 135 Companies Act 2013, CSR obligations apply to a company having (during any financial year):

1. Section 135(1) Companies Act 2013, as amended in 2019, applies to every company having: (a) net worth of Rs 500 crore or more; OR (b) turnover of Rs 1,000 crore or more; OR (c) net profit of Rs 5 crore or more (raised from Rs 5 crore originally) during the IMMEDIATELY PRECEDING FINANCIAL YEAR. 2. Such company shall constitute a CSR Committee of the Board (Section 135(1)) and spend, in every financial year, at least 2 PER CENT of the average net profits of the company made during the three immediately preceding financial years (Section 135(5)) on activities listed in Schedule VII. 3. Companies (Amendment) Act 2019 introduced mandatory unspent amount transfer + penalty regime. 4. Hence option A is correct. _Source: Companies Act 2013 (Act 18 of 2013), Govt. of India MCA — Companies Act 2013, Section 135(1); Companies (CSR Policy) Rules 2014_