Need 1/1 please give correct answer choices!

Match the blank with the correct answer: "When converting an integer from [BLANK 1] to binary representation, we convert each digit to its binary representation using blocks of three bits. Then, concatenate the blocks." "When converting an integer from [BLANK 2] to binary representation, we convert each digit to its binary representation using blocks of four bits. Then, concatenate the blocks." 3 1. octal 2.- BLANK 1 2. decimal 3. hexadecimal