Given below are two statements, one labelled as Assertion (A) and the other as Reason (R). In the light of the above statements, choose the most appropriate answer from the options given below:

Online survey tools have genuinely made surveying and data analysis easier, so Assertion A is correct.

Reason R claims online surveys avoid challenges like selection bias, which is false.

Online surveys in fact suffer selection bias because only internet-access respondents can participate.

Both-correct options fail once R is shown to be untrue.

The option making R the explanation of A collapses along with R.

Coverage error arises when the sampling frame excludes parts of the target population, as with offline groups.