The compound (CH₃)₃CCH₂CH(CH₃)₂ is:

Select one:

a.

named as a pentane but is an isomer of hexane

b.

named as a pentane but is an isomer of heptane

c.

named as a pentane but is an isomer of octane

d.

named as a butane but is an isomer of octane

e.

named as a hexane but is an isomer of octane