Suzie Has Installed a New Spam Blocker Program on Her $\mathrm { H } _ { 0 }$

Suzie has installed a new spam blocker program on her email.She used to receive an average of 20 spam emails a day.Is the new program working?

A) $\mathrm { H } _ { 0 }$ : ? > 20 $\mathrm { H } _ { \mathrm { A } }$ : ? = 20
B) $\mathrm { H } _ { 0 }$ : ? = 20 $\mathrm { H } _ { \mathrm { A } }$ : ? > 20
C) $\mathrm { H } _ { 0 }$ : ? = 20 $\mathrm { H } _ { \mathrm { A } }$ : ? < 20
D) $\mathrm { H } _ { 0 }$ : ? = 20 $\mathrm { H } _ { \mathrm { A } }$ : ? ? 20
E) Not enough information is given.