Consider the following statements concerning the utility of mesh-connected tertiary windings in star-star transformers:1. It is used to suppress harmonic voltages2. It is used to allow flow of earth fault current for operation of protective devices3. It facilitates supply of single-phase loads4. It provides low-reactance paths for zero sequence currentsWhich of these statements are correct?

• A. 1, 2, 3, and 4
• B. 1, 2 and 3 only
• C. 1, 2 and 4 only
• D. 3 and 4 only