ISTQB Sample Questions || Q41 || Automation Testing || Selenium Java

ISTQB Sample Questions || Q41 ||
Software Testing, Automation Testing, Selenium Java, Manual testing
You are testing a machine that scores exam papers and assigns grades. Based on the score achieved the grades are as follows:
1-49 = F
50-59 = D-
60-69 = D
70-79 = C
80-89 = B
90-100=A
If you apply 2-point boundary value analysis, how many test cases will you need to achieve minimum test coverage?
a. 8
b. 10
c. 12
d. 14