Using parity, the probability for detecting an error, given that one has occurred, is:
a. about 50% for either even or odd parity
b. about 70% for even parity and 30% for odd parity
c. about 30% for even parity and 70% for odd parity
d. about 0% for either even or odd parity
e. about 100% for either even or odd parity
Answer: A