Question: Based on the provided paragraph from 3GPP TS 38.213, what is the primary criterion for selecting between PUCCH Format 0 and Format 1?
Option 1: Number of UCI bits (> 2 or ≤ 2)
Option 2: Presence or absence of orthogonal cover code
Option 3: Number of symbols (≤ 2 symbols for Format 0, ≥ 4 symbols for Format 1)
Option 4: Specific UE configuration (pi2BPSK, additionalDMRS)
Explanation: According to the decision flowchart and quick reference table, the primary criterion for selecting between PUCCH Format 0 and Format 1 is indeed the number of symbols (≤ 2 symbols for Format 0, ≥ 4 symbols for Format 1), as this determines the initial branching point in the format selection process.