प्रत्यक्ष रंगाई (Direct Dyeing) के संबंध में सही कथनों की पहचान कीजिए: I. इसके लिए कपड़े पर रंग फिक्स करने के लिए एक मॉर्डेंट (Mordant) की आवश्यकता होती है। II. इसका उपयोग मुख्य रूप से कपास जैसे सेल्यूलोज फाइबर के लिए किया जाता है। III. यह खराब धुलाई स्थायित्व (Wash fastness) प्रदान करता है।

Given below are two statements: Assertion A: The dyeing of highly crystalline synthetic fibers like polyester often requires the use of carriers or High Temperature High Pressure (HTHP) techniques. Reason R: Carriers or swelling agents are necessary to swell the dense polymer structure of crystalline fibers, allowing dye molecules to penetrate effectively. In the light of the above statements, choose the most appropriate answer:

Given below are two statements: Assertion A: Electrolytes such as sodium chloride or sodium sulphate are added during the dyeing process to neutralize the naturally repelling negative charges of textile fibers and dye molecules. Reason R: When heat is applied in an aqueous dye liquor, the water dissociates and hydrophilic fibers swell, allowing large dye molecules to penetrate the fiber's polymer system. In the light of the above statements, choose the most appropriate answer: