You design an online survey about commuter students' use of campus transportation. You e-mail the survey to a convenience sample of $150$ students and receive $42$ completed surveys. Which of the following is the correct response rate and the most likely nonsampling error affecting representativeness?

$\text{Response rate }=32\%$; most likely nonsampling error: sampling frame error

$\text{Response rate }=14\%$; most likely nonsampling error: measurement error

$\text{Response rate }=28\%$; most likely nonsampling error: nonresponse bias

$\text{Response rate }=70\%$; most likely nonsampling error: processing error