Correct option is A
The correct indirect form of the sentence
"I have joined computer classes," Rudra said is
"Rudra said that he had joined computer classes."
Direct speech- Direct speech, also known as quoted speech or direct quotation, is a way of reporting someone's exact words.
Indirect speech- Indirect speech, also known as reported speech or indirect quotation, is a way of reporting someone's words or thoughts indirectly, without using their exact words.
· This transformation maintains the shift from first person to third person and changes the tense from present perfect to past perfect, which is typical in reported speech to reflect the time shift.
· Example: "I have finished the work," he said. He said that he had finished the work, similarly using past perfect in reported speech.